Imagine a rhinoceros. For the sake of argument, let’s say it’s a white rhinoceros. Don’t worry if you can’t envision every little anatomical flourish in your mind. We’re going to modify this beast a bit.

First thing’s first – lose the horn. We have no use for it. Next, lengthen the neck a bit. Not too much – we’re not turning this rhino into a giraffe – but enough so that the neck is slightly more than half the length of its back. Now for the legs. Stretch them out so that the rhino’s belly is a little higher off the ground. Scale the thing up until it stands about 18 feet at the shoulder and