Hello everyone from Mollie and yoshi

Hi. My first time on this site. So forgive me if i get confused. I have a 16 month old pitbull. He is a rescue. Ive only had him for 3 months. Nobody seems to know which type he is. Basically he has short legs, long torso, big head and weighs 56 lbs. :help:

Hello everyone from Mollie and yoshi