Which are all characteristics of colic?

Colic is a term used to describe abdominal pain in horses, often related to various gastrointestinal issues. The characteristics listed in the correct answer, which include abdominal pain, rolling, and possibly a twisted intestine, are directly associated with colic symptoms.

Abdominal pain is a significant indicator of colic, and it can cause horses to exhibit behaviors such as rolling on the ground in distress or trying to get up and down repeatedly. A twisted intestine, or torsion, is a serious condition that can lead to severe colic symptoms and requires immediate veterinary attention.

The other choices contain symptoms that do not align with typical colic signs. Excessive drinking and pacing can be seen in some situations but are not primary indicators of colic. Increased appetite and lethargy suggest different underlying health issues that do not typically relate to colic, as horses with colic may show a reduced desire to eat. Shortness of breath and coughing indicate respiratory problems rather than gastrointestinal distress associated with colic.