Fleas are blood-feeding parasites that can infest many species of birds and mammals. Although fleas on dogs and cats don’t infest people, fleas may bite people if an area is heavily infested. Flea infestation is one of the most common medical problems veterinarians see, and pets suffer greatly from this condition. Flea bites can trigger severe allergic reactions in some pets. The intense itching caused by flea infestation causes pets to scratch and bite themselves. This can lead to skin wounds, skin infections, and general misery for your pet. Even if your pet is not allergic to flea bites, fleas can transmit serious diseases, such as bartonellosis (the bacteria that causes “cat scratch disease” in people), and other parasites, like tapeworms.

It is a common misunderstanding that seeds are a sufficient diet for companion birds. After all, wild bird feeders are filled with seeds, right? However, while wild birds enjoy the seeds people provide, they also eat a wide variety of other foods, including plants, insects, nectar, and, for some species, other small animals. In the wild, the same is true for cockatiels, parakeets, macaws, and other parrots. In their natural setting, these birds consume an almost unbelievable variety of foods.

Bordetella bronchiseptica (B. bronchiseptica) is a bacterium that is commonly associated with respiratory disease in dogs. It can also infect cats, rabbits, and, in rare cases, humans. It is one of the most common bacterial causes of canine infectious tracheobronchitis, which is also sometimes called kennel cough. B. bronchiseptica is highly contagious, easily transmitted through direct contact or the air, and resistant to destruction in the environment.

Arthritis is a joint problem that can reduce mobility and cause pain. Often seen in older dogs, arthritis can by caused by injury, infection, the body’s own immune system, or developmental problems. The most common form of arthritis is called osteoarthritis (osteo = bone; arthr = joint; itis = disease) or degenerative joint disease. Normally, joints form smooth connections between bones. Osteoarthritis involves thinning of joint cartilage (a protective cushioning between bones), buildup of fluid within the joint, and the formation of bony growths within the joint. Over time, this can lead to reduced joint mobility as well as pain. Osteoarthritis affects one of every five dogs.

Diabetes mellitus is an illness caused by the body’s inability to either make or use insulin, which is a hormone produced and released by specialized cells in the pancreas. Insulin permits the body’s cells to take sugar (glucose) from the blood and use it for their metabolism and other functions. Diabetes mellitus develops when the pancreas doesn’t make enough insulin or when the body’s cells are unable to use available insulin to take glucose from the blood.

Canine influenza virus (CIV) was first detected in 2004 in racing greyhounds in Florida. Investigators learned that this new canine influenza developed when an equine influenza virus adapted to infect dogs. This was the first time that an equine influenza virus had been found to “jump” from horses to dogs. According to Dr. Cynda Crawford of the University of Florida College of Veterinary Medicine, canine influenza does not infect people, and there is no documentation that cats have become infected by exposure to dogs with CIV.

Obesity (the storage of excess fat) is usually caused by excessive food intake and insufficient exercise. According to estimates, 40% to 50% of dogs are overweight and 25% of dogs are obese. Obesity is more common in older, less active pets. Dogs that are fed homemade meals, table scraps, and snacks are more likely to be overweight than dogs that are fed only a commercial pet food.

Canine parvovirus is a deadly disease that is caused by the canine parvovirus type 2 (CPV-2) virus. The virus attacks the gastrointestinal tract and immune system of puppies and dogs. It can also attack the heart of very young puppies.

With many dogs living well into their teens, many owners wonder: When is a dog truly senior? The answer is that there is no specific age at which a dog becomes senior. Individual pets age at different rates. However, most dogs become senior at 7 to 10 years of age, and most large- and giant-breed dogs become seniors earlier than small-breed dogs.

One of the most intelligent birds ever studied, the African grey parrot has an amazing ability to imitate human speech and precisely mimic sounds within the environment (for example, ringtones and doorbells). African grey parrots can be affectionate, entertaining, and rewarding companion animals; however, owners must be knowledgeable and conscientious to fully enjoy the qualities of African grey parrots. These birds prefer a routine schedule and a stable environment within their enclosure, and they require a substantial amount of interactive time with their owners to develop a trusting, enjoyable relationship. Therefore, African greys may not be appropriate for people who work odd hours, travel frequently, or spend a substantial amount of time away from home.

A bearded dragon can be a good choice for a pet reptile. These charismatic lizards from Australia are friendly and relatively easy to care for. They grow up to two feet in length and can live up to 10 years. If they are fed and housed properly, they can provide many years of companionship.

A cockatiel is a small Australian parrot. If you prefer a small bird that may be more affectionate than a larger parrot, does not vocalize loudly, and requires less space, a cockatiel is an excellent choice. Cockatiels are prized throughout the world because of their loveable companionship qualities. They are gentle and easy to breed and enjoy interacting with humans. Cockatiels make soft chirping sounds, whistle (especially the males), and are generally less noisy than most other parrots. Cockatiels are easy to tame as well as inexpensive and simple to maintain; therefore, they are an excellent choice for first-time bird owners.

Ferrets are quiet, friendly, curious, and playful. They can be trained to come to an owner’s call or a specific sound, such as the squeak of a toy.

Mild-mannered and cute, guinea pigs can be great pets. They're fairly easy to care for, but they do require some special care as well as regular veterinary checkups, comfortable housing, and attention from their owners.

Hamsters are the most common pet rodent for several reasons. These curious, attractive, and clean little companions are interesting to observe. Hamsters can be a good first pet for children, are easy to care for, and are usually friendly. However, hamsters are nocturnal (most active at night) and have delicate bones that can break easily due to mishandling or falls.

Toxicosis is disease due to poisoning. Chocolate contains two ingredients that can be toxic to pets—caffeine, and a chemical called theobromine. While dogs and cats are both very sensitive to the effects of caffeine and theobromine, cats are usually not attracted to chocolate, so chocolate toxicosis tends to be less common in cats.

Your home can hold a lot of unrecognized dangers for your pet. Many common food items or household products can sicken or even kill animals. However, a few simple precautions can help keep your pet safe.

Declaw surgery, also known as onychectomy, generally involves the surgical removal of the claw and all or a portion of the last bone in each digit. It is usually performed on the front paws only. Younger cats (under 1 year of age) tolerate the procedure better than older or obese cats that bear more weight on their paws.

Bad breath in pets may be a sign of periodontal disease that could lead to other health problems. Periodontal disease starts when plaque (a bacterial film) coats the tooth. Plaque hardens (calcifies) into tartar, a thick yellow or brown layer on the teeth. Tartar can irritate the gums, creating an environment where bacteria thrive. As the disease progresses, the gums become tender, red, and swollen and the bacteria continue to multiply. Eventually, the inflamed gums pull away from the teeth, creating pockets that trap more bacteria and food particles. The gums bleed, the roots of the teeth may become exposed, teeth may become loose, and your pet may feel pain when eating. If the bacteria enter the bloodstream, they can create problems for organs such as the heart, lungs, liver, and kidneys.

Cats are notorious for preferring sleep to exercise. However, regular exercise is important to your cat’s health because it burns calories, reduces appetite, maintains muscle tone, and increases metabolism (the rate at which calories are burned).

Exercise can have many health benefits for your dog. Regular exercise burns calories, reduces appetite, improves muscle tone, increases metabolism, and improves temperature regulation. It can be a valuable contributor to weight loss and maintenance. Exercise can also help stimulate your dog’s mind, thereby preventing boredom and destructive behaviors.

Diabetes mellitus is an illness caused by the body’s inability to either make or use insulin, which is a hormone produced and released by specialized cells in the pancreas. Insulin permits the body’s cells to take sugar (glucose) from the blood and use it for their metabolism and other functions. Diabetes mellitus develops when the pancreas doesn’t make enough insulin or when the body’s cells are unable to use available insulin to take glucose from the blood.

Feline immunodeficiency virus (FIV) is contagious among cats. Although FIV is not contagious to humans, FIV has some similarities to the human immunodeficiency virus (HIV) and has been used to help researchers better understand HIV.

Obesity (the storage of excess fat) is usually caused by excessive food intake and insufficient exercise. One of the biggest problems in cats is overfeeding, which can lead to serious problems, including obesity, heart disease, and arthritis, resulting in a shortened life span. Your veterinarian can recommend a proper type and amount of food to maintain your cat’s ideal weight.

With many cats living well into their teens or even twenties, many owners wonder: When is a cat truly a senior citizen? The answer is that there is no specific age at which a cat becomes “senior.” Individual pets age at different rates.

Companion animals today have the opportunity to live longer, healthier lives than ever before. One of the main reasons for this is the availability of vaccines that can protect pets from deadly infectious diseases. Over the past several decades, the widespread use of vaccines against diseases like panleukopenia and rabies has saved the lives of millions of cats. Unfortunately, infectious diseases still pose a significant threat to cats that are unvaccinated; so, although vaccine programs have been highly successful, pet owners and veterinarians cannot afford to become complacent about the importance of keeping pets up-to-date on their vaccinations.

Dealing with an injured pet can be scary and frustrating. In many cases, you don’t know how bad the injury is, and your pet may not be acting normally. If your pet is injured, the first thing you need to do is try to remain calm. If possible, try to determine how severe the injury is, but remember that caution is extremely important when approaching an injured animal. Any pet, no matter how calm or friendly he or she may usually be, can bite or scratch when in pain.

Fleas and ticks are external parasites that can cause extreme discomfort for your pet and can also cause serious diseases.

If your pet is being treated by a veterinarian, it’s likely that you will be asked to return for a follow-up examination. This physical examination is usually scheduled a few weeks after the initial examination and may be done for a number of reasons.

Food allergy (also called food hypersensitivity) refers to a type of physical reaction to food. Food reactions are classified into two categories: those that are the result of immune system stimulation and those that are not. Food allergy occurs when the immune system begins to overreact to ingredients that the pet has eaten with no problems in the past. Food intolerance occurs when what is eaten has a direct, negative effect on the stomach and/or intestines, such as spoiled meat, chewed up toys, food additives, and abrupt changes in diet. Food intolerance is not an immune reaction.

Kidney disease is a very general term used to describe any one of several conditions that can affect the kidneys or damage kidney cells. If kidney disease progresses, it can eventually lead to kidney failure and death.

Your veterinarian can see signs of gingivitis and tartar buildup by examining your dog’s mouth. However, since most periodontal disease occurs beneath the gum line, the only way to truly assess your dog’s mouth is to perform an examination while your pet is under anesthesia. Your veterinarian can use a dental probe to measure any loss of attachment around each tooth and take dental radiographs (x-rays) to assess for bone loss, abscesses, and other problems.

Animals that have seizures are often given phenobarbital to help control and prevent seizure activity. Many animals, especially those with epilepsy, require lifelong therapy with phenobarbital. Because animals can absorb and metabolize this medication differently, it’s important to monitor blood levels on a regular basis.

During your pet’s examination, your veterinarian will ask you many questions about your pet’s behavior, lifestyle, and health history since your last visit. The answers to these questions will help your veterinarian determine what preventive care recommendations he or she should make to help keep your pet healthy. Based on your pet’s age, lifestyle, and disease risk, your veterinarian will recommend vaccinations for your pet.

Rabies is a deadly disease caused by a virus that attacks the central nervous system. All warm-blooded animals, including wild animals, dogs, cats, and humans, are susceptible to it. Once clinical signs appear, rabies is generally fatal. However, the disease is also generally preventable through vaccination.

Spaying and neutering are surgical procedures used to remove the reproductive organs of dogs and cats. Spaying is the removal of the uterus and ovaries of a female dog or cat. Neutering is the removal of a male dog’s or cat’s testicles. These procedures are also sometimes referred to as “sterilizing” or “fixing” pets.