Extra Notes!! They cannot run on all fours under normal circumstances. Except smaller breeds. They can adapt to running on all fours with moderate ease. Their bodies can roll/curl forward completely, but are extremely limited to the other way around. The "hunch" and the roll of muscle and skin is almost always present. The longest tails are the horse hair tails. It's extremely rare for it to be so long in bone structure.
Ah! That's absolutely fine tho! I just did these anatomy refs just to ride of "looks like x species" accusations and such! Back then, they where really skinny and more dog like which is still canon for some of them (like the joes)! I just draw them more bottom heavy because it's kawaii as heck