Marijuana, the most often used illegal drug in this country, is a product of the hemp plant, Cannabis sativa. The main active chemical in marijuana, also present in other forms of cannabis, is THC (delta-9-tetrahydrocannabinol). Of the roughly 400 chemicals found in the cannabis plant, THC affects the brain the most.
Cats 'vibrate' when marking territory-spayed cats can also 'dry' spray. Spayed male cats urine doesn't smell. They swish their tales as a sign of annoyance or anger. If the tip of the tail 'trembles', it's quite often a sign of being 'unsure' about something. Source(s): Cat owner.
CH cats may also experience head tremors, the uncontrollable shaking of the catâs head when sheâs trying to focus. Again, some cats may experience mild cases, others may be more severe. (Consequently, some think CH cats may have vision issues. If you think this is an issue with your cat, speak to your vet.)