Caleigh has a small butt?

I posted her picture in a different online forum and someone commented that she was a gorgeous horse but had an unusually small butt for her breed. I know she's "petite" for a clyde, tall and in shape though. She's building muscle great and her weight is great or so the vet has complimented. I never thought of her having a small butt. I'm thinking it could be just lack of muscle or meat but I think her butt fits her. What do you think? I think she has a cute butt.

3rd picture is most recent about 4 days old.

We're working on collection and that's been building good butt muscle...but would it make it more "drafty?"

I think she's super cute! She kind of has a quarter horse butt... maybe its just me.. :P But hey she looks great!

It is kinda quarter horse shaped but I don't think it's small. When I think of small butt I think of out of porportion to her body and to me it doesn't look it. On top of her looking down it's a big apple butt. It does look a lot smaller next to Sampsons big belgian rear though. Haha