The minis found in Jurassic Park fanfiction are mini-Tyrannosaurus rex. This can be shortened to mini-T. rex. Mini-T. rex have two thick legs and two short arms. They walk with their body held horizontally, tail straight back and head pointed forwards. In cases where the mini-T. rex is named after another dinosaur, it can have the physical characteristics of that species. For example, spino has a sail-like projection on its back, like Spinosaurus. As a mini, they love bacon, of course, but will enjoy pretty much any meat. Except Slorp.