Asparagus fern (also called emerald feather, emerald fern, sprengeri fern, plumosa fern, and lace fern) is toxic to dogs and cats. The toxic agent in this plant is sapogenin—a steroid found in a variety of plants. If a dog or cat ingests the berries of this plant, vomiting, diarrhea, and/or abdominal pain can occur. Allergic dermatitis (skin inflammation) can occur if an animal is repeatedly exposed to this plant.

Adrenal gland disease is, unfortunately, a common disease of pet ferrets in the United States. Most affected ferrets are older than 2 years. While the exact cause of this condition has not been determined, it is believed that spaying and neutering ferrets at an early age plays a role. This is problematic because failing to spay females can result in life-threatening illness, while neutering males reduces odor and aggression. Removal of the testes or ovaries removes hormonal influences that appear to affect the adrenal gland. In the absence of these influences, the adrenal glands may overproduce several sex hormones, causing a variety of clinical signs. In some cases, the overactive gland can eventually become cancerous. Genetics may also play a role in the development of adrenal gland disease.

Barking is one of several types of vocal communication by dogs. You may appreciate your dog’s barking when it signals that someone is at your door or that your dog needs something. However, dogs sometimes bark excessively or at inappropriate times. Because barking serves many purposes, determine why your dog is doing it before attempting to address a barking problem. Does your dog use barking to get what he or she wants? For example, dogs that get attention for barking often learn to bark for food, play, and walks as well. Therefore, training your dog to be quiet on command is important so that you can teach your dog a different behavior (such as “sit” or “down”) for getting what he or she wants. Dogs of certain breeds and dogs that aren’t spayed or neutered may bark more than other dogs; therefore, it can be more difficult to reduce barking in these dogs.

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.

A clean, roomy cage and a nutritious diet are important to keeping your rabbit healthy and happy. Also important is the time you spend interacting with your rabbit: a bored and lonely rabbit can become destructive and even aggressive. Providing the interesting surroundings and companionship that your rabbit needs can help him or her be well adjusted and affectionate.

A variety of cat litters are available commercially, including litters made of clay, plastic, wheat, sawdust, newspaper pellets, and corn cobs. The choice depends on what matters most to you and your cat. You may have to try a few to see what you and your cat like. Most cats prefer unscented, scoopable litter because of its sandlike texture. Many owners prefer scoopable litters because they control odors and absorb liquid (clump) well, making it easy for owners to scoop out urine “balls.” This leaves the remaining litter dry and odor free.

Grief is a natural reaction to the loss of a pet. Regardless of whether the pet is old or young, or whether the loss is expected or sudden, family members and other people who were close to the pet will experience similar feelings when a beloved pet dies. These feelings, commonly called the five stages of grief, are the same as those experienced when a person passes away.

Parasites are of significant concern in horses. Infection with intestinal parasites may cause mild symptoms to severe, life threatening disease.

Rabbits make great pets: they are easy to keep; can be litterbox trained like cats; and can live a long, healthy life, providing many hours of enjoyment. The average life span of a domestic rabbit is 6 to 10 years. If kept outdoors, rabbits need to live in a secure location safe from predators. If rabbits are kept indoors, the house must be “bunny proofed” to remove items that rabbits could chew and destroy or that could be harmful, such as electrical cords. Rabbits need to be kept in a clean, climate-controlled environment with fresh water and good nutrition. Pet rabbits typically live longer than rabbits for commercial use, so the goals for feeding pet rabbits differ from those for production rabbits.

The Coggins test is used to detect equine infectious anemia (EIA)—a highly contagious and potentially fatal viral disease of horses.