Getting hard to move (Patreon)

I was rewatching "Spirit stallion of the cimarron", which is my favorite movie with The lion king, and noticed how green everything is where Spirit lives with his herd and as well as I know horses they wouldn't keep the slim body as they are drawn in the movie and overeat themself. So the mares would be very fat and stallions would be a bit slimmer (since they move alot) but still fat. 

I took the freedom to put extra weight on Rain so she is even bigger.