Shelves and Cage Height
The care regulations that were instituted in Canada in 2018 include a requirement for higher cages than before.
I've been moving towards higher cages for some time, and while my stackers are still 18“ high
(which is above the minimum required height), most of my other cages are 2' - 3' high.
Almost all of them also have shelves that the rabbits can sit on or under.
They like to hide under the shelves, but they also really love to sit on top.
These pictures should explain why height and shelves are a good idea!