What is a sign of Gastric Trichobezoars?

A sudden cessation of eating is a significant sign of gastric trichobezoars, which are hairballs that can form in the stomach of rabbits. When a rabbit develops a trichobezoar, it can lead to gastrointestinal blockage or discomfort, causing the animal to stop eating altogether. This behavior reflects the distress and pain associated with the blockage, as a healthy rabbit typically maintains a regular eating pattern.

In contrast, the other options do not align with this condition. For instance, increased appetite or weight gain would not occur in a rabbit suffering from a blockage, as the inability to eat leads to weight loss. Excessive vocalization is generally a sign of distress or discomfort but is not specific to gastric trichobezoars, as it can be seen in various other health issues. Thus, the sudden cessation of eating is a clear indicator of this specific health concern in rabbits.