Which of the following is an expected sign of roundworms in young animals?

Young animals infected with roundworms often display a range of symptoms due to the parasites' impact on their health and well-being. One expected sign is belly pain, which occurs as these worms inhabit the intestines, causing discomfort and potential blockage. This pain may manifest as a distended abdomen, often referred to as "pot-bellied" appearance, which is common in cases of significant worm infestation. The presence of belly pain indicates that the parasites are affecting the digestive system, leading to discomfort for the animal.

In contrast, increased appetite is more associated with other conditions, such as malnutrition or diabetes, rather than specifically with roundworm infestation. Puffy eyes could be indicative of other health issues, including allergies or infections, but are not a typical sign of roundworms. A clear coat suggests good health and proper grooming, which is generally not reflective of the presence of intestinal parasites like roundworms, as infestations often result in malnourishment and a dull or unkempt appearance.