cats bipolar

Is it possible to have a bipolar cat?
my cat has frequent mood swings One minute she will be asleep in my lap and then just attack like a cobra. you never know if you're going to get the cat or the cat nice when you see evil is this normal or should I have her checked by a veterinarian? that is 8 months old
In fact, not bipolar, but may be depressed. Cats are very sensitive creatures. he can be as evolved as humans and are running on emotion. My cat is depressed do not know why, but he used to play and now urine around the house (and hes been fixed for a couple of years) and sleeps all the time. and this is only in the past 6 months … I take cat to the vet as soon as U are able to.
Weezy the fighting Cat