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.
Why do cats swish their tails? To get their balance before leaping or to mesmerize their prey. She swishes her tail to get the prey to move and knows where her target is at. ~~~~~ Why do cats wag their tails from side to side? The tail moving from side to side in a gentle manner means contentment. If the cat is sitting quietly, she might be focused on something. Fast, whipping back and forth could be anger or annoyance. Tail wagging in between these descriptions could mean sheâs feeling indecisive.