I have a doggy door and LOVE it. It made the whole potty training thing go easy! Really! It really took a lot of stress away from my husband and me.
I have heard, however that if you have a small one that birds can get them. I guess it depends where you live...
Stomper is a big boy and thinks he is hot stuff running in and out of the doggy door! It is soooooooo easy to train them to go out. It is great!
__________________  Kimberly & Stomper |