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An ommatidium contains a cluster of photoreceptor cells surrounded by support cells and pigment cells. The outer part of the ommatidium is overlaid with a transparent cornea . Each ommatidium is innervated by one axon bundle (usually consisting of 6–9 axons , depending on the number of rhabdomeres ) [ 2 ] : 162 and provides the brain with one ...
Lymphangiectasia is an intestinal disease of dogs characterized by chronic diarrhea and loss of proteins such as serum albumin and globulin. It is considered to be a chronic form of protein-losing enteropathy. Breeds commonly affected include the Soft-Coated Wheaten Terrier, Norwegian Lundehund, Basenji, and Yorkshire Terrier. [6]
Domestic dogs in Belgium showed a mean prevalence of T. canis of 4.4%, those from larger kennels of up to 31%. [6] In domestic dogs in Serbia, T. canis was detectable in 30% of the animals, [7] in herding and hunting dogs in Greece in 12.8% and T. leonina in 0.7% of animals. [8]
Gastrointestinal conditions include inflammation of the small and/or large intestine, diarrhea/dysentery, abdominal pains, and nausea/vomiting. These symptoms negatively impact nutritional status, including decreased absorption of micronutrients, loss of appetite, weight loss, and intestinal blood loss that can often result in anemia.
Genus Isospora is the most common cause of intestinal coccidiosis in dogs and cats. Species of Isospora are host-specific, infecting only one species. Species that infect dogs include I. canis, I. ohioensis, I. burrowsi, and I. neorivolta. Species that infect cats include I. felis and I. rivolta. [8] The most common symptom is diarrhea.
At least 28 dogs have died and another eight have become sick after eating dog food that contained high levels of a toxin called aflatoxin, the Food and Drug Administration said, as some pet foods ...
Canine distemper virus (CDV) (sometimes termed "footpad disease") is a viral disease that affects a wide variety of mammal families, [2] including domestic and wild species of dogs, coyotes, foxes, pandas, wolves, ferrets, skunks, raccoons, and felines, as well as pinnipeds, some primates, and a variety of other species.
Pythiosis of the skin in dogs is rare, and appears as ulcerated lumps. Primary infection can also occur in the bones and lungs. Dogs with the gastrointestinal form of pythiosis have severe thickening of one or more portions of the gastrointestinal tract that may include the stomach, small intestine, colon, rectum, or in rare cases, even the ...