Siriusly, people can get weird things in their head.

Whoever said that JK Rowling copied from Stephenie Meyer's Twilight is an idiot.
To anyone who's done their research at all, SIRIUS BLACK was written long before Meyer had that bizarre dream. Sirius had a motorbike and his animagus is a dog.
Jacob Black rode a motorbike and he is a shapeshifter that could turn into a wolf (aka dog)!