I bought the largest size as a crate bed for my newly adopted 85lb retired greyhound. The bed felt comfortable enough, but I didn't realize I was dealing with a situation of separation anxiety and the bed only lasted a day. When I came home after a few hours there was about a foot of shredded foam in and around the crate. It took several trips in and out with the shop vac to clean everything. This bed probably would have lasted a while outside of the crate, but there's a chance if you have a dog that likes to dig around in their beds you may have a large mess to deal with.