They could play and sleep or groom any of the other cat in this foster home but they are brothers, they are bonded, they love each other. This is one of the many reasons we ask that bonded pairs stay together be it as kittens or as 3 yr olds like these two. Mike and Charlie continue to care for each other and love being together. Both are affectionate and love cuddles with their humans. This picture DOES say it all.