Which of the following is NOT a potential sign of poisoning in an animal?

Excessive barking is not typically associated with poisoning in animals, unlike the other signs listed. Signs of poisoning often involve physiological distress or neurological impairment that can manifest as vomiting, loss of coordination, or seizures.

Vomiting can occur as the body attempts to expel toxins. Loss of coordination may indicate neurological involvement or disruption of normal muscle function. Seizures are often a direct result of poisoning, reflecting significant central nervous system effects. In contrast, excessive barking does not directly correlate with the physical symptoms indicative of toxic exposure and is generally more related to behavioral responses or environmental triggers rather than a medical emergency. Thus, it is not considered a reliable indicator of poisoning in animals.