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.
Obsessive tail-chasing can indicate an underlying medical problem known as feline hyperesthesia, or cat schizophrenia. This is characterized by âfixation with the tail, often manifested as swishing of the tail, chasing of the tail or attacking the tail,â the VeIinfo website notes.