When I got Jacey, she was very muscle-bound--not limber or flexible at all. She had run a so-so first season (some promising fourth-place finishes), and I think they overworked her during the off-season. She came back after the track's winter break, ran an awful seventh-place finish, and was immediately retired. When I got her, she had trouble flexing her legs well for getting on and off the furniture, going down the stairs (up was okay, but her back legs didn't flex well for going down and she sort of bunny-hopped with her back legs, both feet hitting the step at the same time). After a few months of couch-potatoing at my house, she became much more limber, and narrow sleeping spaces were fine. (Both my dogs like to curl up in smallish, nest-like dog beds.) Jacey now often sleeps with her back feet hugged up under her chin, and she'll curl up tightly if it's at all cold.