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.
Feline Hyperesthesia Syndrome in Cats. Feline hyperesthesia syndrome (FHS), also known as âtwitch-skin syndromeâ and âpsychomotor epilepsy,â is an obscure cat disorder resulting in intense biting or licking of the back, tail, and pelvic limbs. The nervous and neuromuscular systems, along with the skin, are affected.