My two guineas are beginning to get quite rebellious.They are around 15 months old now.Sometimes,I go into them,and they have trashed their cage.Their beds are upside down,the food dish is tipped over,food everywhere,and the other day,they unhooked their hay ball and that was lying on the floor.When I walk in,they both look at me sheepishly,as if to say,yay we've had a great party,sorry abot the house!