Elevated Memory Foam Orthopedic Dog Bed with Removable Cover, Large 48-Inch

do you sell extra bed covers ?

Anyone have a problem unzipping the cover? I'm on my second bed and can't get the zipper to unzip. Very frustrating because I want to wash the cover.

Reviews of the cover are disappointing. Has the problem been fixed?

Can the 52" bed fit one medium sized dog and one large dog?