My first greyhound, Flossie loved her crate, kept it up for 7 yrs, door always open, until she passed away. 2nd greyhound, Kerri went into the crate once, didn't like it and never used it. 3rd greyhound, Abel, crated him in the begining, he busted out of it. no more crates here. If I need to separate the two, I use a baby gate and it works fine