A skin scrape from a cow with pruritus and crusts around the caudal thighs and perineum shows the organism below. What is the presumptive diagnosis?

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A cow is presented with pruritus and crusts around the face, as shown in image one.

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Which type of cat is predisposed to excessive play aggression?

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A client who raises North American farmed deer and elk asks you to remove of the entire soft antler of several animals in the first 55-65 days of growth, a practice called "velveting." What should you tell the client?

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Which one of the following organisms causes Tyzzer disease?

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During the fall, a 12-pound, five-year-old neutered male cat from New Mexico is presented with a draining abscess. He also has a two-day history of lethargy, depression, runny eyes, decreasing appetite and intermittent vomiting and diarrhea. He is an indoor/outdoor cat, up-to-date on vaccines. He has a marked unilateral submandibular lymphadenopathy on the same side as the ruptured abscess. A swab of the draining tract reveals microorganisms with a bipolar-staining "safety pin" appearance using both Giemsa and Wright stain.

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