What clinical sign is not typically observed in cases of THC toxicity in dogs?

In cases of THC (tetrahydrocannabinol) toxicity in dogs, hyperactivity is not typically observed. THC is a psychoactive component of cannabis that can have various effects on the nervous system. Dogs exposed to THC often display signs of sedation and lethargy rather than increased activity.

Common clinical signs of THC toxicity include mydriasis (dilated pupils), bradycardia (slowed heart rate), and ataxia (lack of coordination), which are consistent with the depressant effects of THC on the central nervous system. These signs reflect the sedative and altering effects that THC can have on an animal's behavior and body functions.

Hyperactivity is contrary to the more common sedative effects seen with THC exposure, making it the clinical sign that does not align with the typical presentation of THC toxicity in dogs.