Abscess (site unspecified)
Acanthocephala (thorny headed worm)
Acanthomatous adamantinoma (site unspecified)
Acarus farris (hamster fur mite)
Accelerated idioventricular rhythm
Acetonaemia ( ketosis)
Acquired skin fragility (Fragile skin syndrome)
Abnormal bone mineralisation: navicular bone (distal sesamoid)
Abnormal bone mineralisation: proximal phalanx
Abomasal bloat