Hello,

We have had 2 bunnies from the animal shelter for about 4 years now.  The bunnies are potty trained and spayed and neutered.  All was well until about 2 months ago when they started knocking the litter boxes around and making a mess.  There have not been any changes to the cage or the room in the past 4 years.  The cage is 4’L x 3’W x 6’H and the bunnies also have time outside the cage.  They have several toys in the cage including unpeeled willow baskets and cubes or balls, plastic toys, and a cardboard box and when they are out of the cage they play with stuff in the room.  They get Oxbow hay, Oxbow pellets, (used to also get Oxbow litter until a week ago since Oxbow does not make the litter anymore) bok choy, radicchio, green leafed lettuce, and a bite of apple.  Often the bunnies pull the hay out of the trough and feed of the cage floor.  Before the past 2 months, this was fine since the cage floor was cleaned daily and the litter box contents stayed in the box.   But now, the hay they feed off the floor is mixed with litter box contents.  It is not just the mess but I am concerned about the bunnies’ sanitation and health since they are eating litter contaminated hay and sitting in spilled litter.  The only thing I can think of that could have caused a change in their behavior in the past 2 months is a visit to the vet and getting their nails clipped.  But we have done this yearly and the bunnies are still friendly with us.  How can I stop this behavior of knocking over the litter boxes?   Thank you.