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Amazons are vulnerable to calcium and vitamin A deficiencies, and when fed a predominantly seed-based diet, they are prone to obesity. Feeding a well-balanced diet in the proper proportions will help prevent the development of these conditions. This handout provides guidelines for providing your Amazon parrot with an optimal diet to thrive and flourish.
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Some commonly kept Amazon parrots include the double yellow-headed Amazon, yellow-naped Amazon, blue-fronted Amazon, green-cheeked Amazon, and orange-winged Amazon. They bond readily, often with one member of the family. This one-on-one bond occasionally may lead to aggression towards others. Amazons are generally very affectionate and often solicit petting and head scratches. Like all pets, Amazon parrots require regular, preventative veterinary health check-ups.
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Anal sac disease is a common problem in dogs that can be very uncomfortable or painful. Signs to watch for, diagnosis, and treatments, including identifying and managing underlying causes are outlined in this handout.
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Anal sac tumors grow quickly and have a moderate risk of spreading to other parts of the body. Depending on the tumor’s size, your pet could develop signs of straining to defecate or produce thin ribbon-like stool. An increased calcium level in the blood is consistent with anal sac tumors, which can cause other signs and result in kidney failure. The best and most well-described local treatment for the primary tumor is surgery. Radiation and chemotherapy may be considered if there is evidence of spread.
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Anaplasmosis is a tick-borne disease caused by the infectious bacterial organism Anaplasma phagocytophilum. It is transmitted through bites of the deer tick (also known as the black-legged tick) and the Western black-legged tick. A lesser form of anaplasmosis is caused by Anaplasma platys and is transmitted by the brown dog tick. Dogs with anaplasmosis often have many of the same symptoms as those with Lyme disease, and infection with both agents (co-infection) is not uncommon.
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Anisocoria is a condition in which the pupils of the eyes are different sizes; one pupil is larger than the other. Anisocoria is a symptom of an underlying condition or disease that needs to be identified and treated. Prognosis is guarded pending the diagnosis and treatment. Blindness may occur as a result of the underlying condition.
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Birds of all species are innately designed to hide symptoms of illness until later stages of a disease process. Any signs of a change in appetite or behavior should be brought to the attention of an avian veterinarian. If an avian patient stops eating, this becomes a life-threatening situation quickly.
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Anthrax is a bacterial infection that can affect dogs if exposed to large amounts of bacterial-produced spores such as by terrorist attack or ingesting large quantities from infected meat. The organism that causes anthrax, Bacillus anthracis, produces spores that are resistant to typical disinfection methods and heat. These spores can last up to 40 years in the environment. Anthrax is usually spread through inhalation or ingestion of spores from infected meat, although cutaneous exposure can occur. Symptoms depend on the type of exposure and can include: black skin pustules, pneumonia, acute gastroenteritis with hemorrhagic vomiting and diarrhea, oral ulcerations, fever, weight loss, swelling of the neck, face and head and ultimately sepsis and death if not treated. Treatment requires antibiotics and can be highly effective in early stages. There currently is no canine vaccine.
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Antibiotic-resistant bacterial infections are bacterial infections that are minimally or no longer responsive to commonly used antibiotics. Although these bacterial infections occur naturally, the frequent and/or inappropriate use of antibiotics accelerates the process. Dogs with certain medical conditions may also be predisposed.
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Aortic stenosis (or a narrowing involving the aortic valve) is a less common heart disease that has a higher incidence in some breeds. Dogs may not show clinical signs if they are mildly affected to more severely affected patients showing signs of heart dysfunction. Diagnostic imaging is needed to determine the severity and prognosis for each individual patient. Medications are the mainstay treatment but for some patients surgical procedures may be considered.