Pretty accurate size ref here!!! And I didn't choose those critters randomly...those are all extant/living animals of the order perissodactyla. In other words, they are the closest living relatives to the extinct chalicotherium! These are all mature adults too. The defining characteristic is their uneven number of toes...horses and zebras have just a single giant toe, while others have three toes such as the rhino. Tapirs are extra weird because they have four toes on the forelegs, but three on the back legs. And all of these odd-toed plant eaters have hooves, even the massive chalicotherium...his are just shaped like claws. :)
For the record, while I've drawn literally thousands of equines over the years, and many tapirs, I've never drawn a rhinoceros before. You can bet your bottom dollar I was yelling at reference photos in frustration because ANATOMY WTF IS THAT. Rhinos are weird. :P
I just love that little Malayan tapir. He's like AW YEAH, RUNNIN' WITH THE BIG BOYS!!!