If Jacob is ashapeshifter and not a werewolf, can he turn himself into another animal?

hes NOT a shpaeshifter. He is a WEREWOLF

It's been some time since I've read the series, but if I remember correctly, Breaking Dawn stated a shapeshifter becomes whatever animal they are focusing on when they first become a shapeshifter. ...It was something along those lines.

(Of course, that's merely fiction! Ha! But still, that's what I remember the book saying nevertheless.)

I don't think so. If he could have, then during the time were Billy was telling their ansester's story he would of сказал(-а) that they were able to change into something else.