Cats can be vicious, ask me! I had a Siamese named Buster for 13 years, and one encounter you would not soon forget. I had to lock him in my bedroom if I ever had guests over (he only liked me and hated every other human alive!) He once somehow opened my bedroom door to attack my brother and he wound up in the ER and my cat was under county quarantine. One vicious SOB! Which is exactly why I could never have a cat again, no cat could live up to my Buster! RIP! Check out this video!