It's a guinea pig house in the link below. It was a great house, but no the roof doesn't lift off, so I changed it for a different one (in the photo), which does have a lift off roof! That one is actually a Ferplast Sin Rabbit house - way too small for a rabbit though. Both of them have quite large doors so I put a bendy bridge over it to make it dark.
This is the one in the photo above (no lift off roof)
https://www.amazon.co.uk/Trixie-Wood...inea+pig+house
This is the Ferplast Rabbit house with lift off roof
https://www.amazon.co.uk/Ferplast-84...n+rabbit+house
And the Ferplast Sin in the cage
Attachment 41725