This is my second time drawing a tiger. It ain't that good, but I'm a lil' bit happy with the result. I like to study animals and their anatomy and history, so ye might find some tips there on ears, paws and eyes. Tigers are bigger and stronger than lions, however they ain't able to roar as loud as the lion. I'd say the difficulty would be intermediate - They are pretty hard to draw... however, not THAT hard. Enjoy!