Increased thirst, or polydipsia, is a common symptom of many conditions in dogs.
Itchy skin, or pruritus, is a common symptom of multiple conditions. Scratching, rubbing, licking, and chewing are the most common signs shown by itchy dogs.
Nystagmus is rhythmic involuntary movement of the eyes. It presents as a rapid horizontal or rotatory twitch.
Increased appetite (polyphagia) describes a condition in which a dog is excessively hungry. Most dogs will always eat if offered food, or “beg” for food, although some are able to self-regulate when free fed.