Hamster Haven is a Rat Palace! Check out this Rat enclosure from Yvonne.
"I bought my Ikea Kullen closet and turned it into a rat cage. Most standard cages are too small, rats like to run, climb and explore. I put in 4 levels and connected the bigger part of the closet with the small part on the right.
The tunnels are made of Nöje.
The houses are made of Försiktig
The toilets are Trofast drawers.
The blue box on the second floor on the right side and the two smaller ones attached to the left door are Fabler.
And the blue little punnets are also from Ikea, but I couldn't find them on their website, they were on sale when I bought them."