Is it normal that i have the urge to masturbate....

one day I was sitting in my living room and I was watching the tv while my hamster started to make noises in his cage. Then I went over to the cage and looked in at my hamster. It was licking itself, and some how it just turned me on so much so i thought iv always wanted to masturbate my hamster and maybe other animals.. (monkeys, dogs ect. am i normal?