Which of the following is NOT a sign of colic in horses?

Colic in horses is characterized by abdominal pain and discomfort, which can present through a variety of signs that reflect distress. Common signs of colic include rolling, restlessness, and sweating, as these behaviors indicate pain or discomfort in the horse.

Rolling is often a response to pain, as horses may try to relieve discomfort in their abdomen. Restlessness is another typical behavior, as affected horses may move around, attempt to lie down and get up repeatedly, or exhibit signs of anxiety and agitation. Sweating can also occur as a response to pain, reflecting the horse's heightened stress levels and discomfort.

In contrast, an increased appetite is not a sign of colic. In fact, horses that are experiencing colic may display a decreased appetite or refuse to eat altogether, as their gastrointestinal distress can lead to a lack of interest in food. Therefore, the presence of an increased appetite would not align with the other signs associated with colic. Understanding these symptoms can assist in recognizing the condition quickly and seeking appropriate veterinary assistance.