We have tried several in her short time with us. Dancer unfortunately ate or attempted to eat all of them. The one she didn't eat for a few days was a very large square pillow style with a dent in the middle. She actually slept in that for three days. Now she has taken possession of a full size bed along with her buddy a small pom. They generously allow me to sleep on the edge of the mattress most nights. Good luck in your search.