well of coase all my pets know eachother, shadow loves gerbils, and gerbils seem to like her as well(wish I could fint that stupid photo album, that has a pic of shadow and sandy(rb) nose to nose) and happy adores the guinea pigs, she spends all her time in the basment with the pigs supper is called for the dogs and you have to carry a limp happy up the stairs cuz she sure aint gonna help me pry her away from the pigs. she lost her best friend a while back now she is completly attache dto the pigs, her best friend was my RB budgie casey, she had kidney deseise but was nontheless a GREAT friend to happy they used to give eachother kisses through the cage bars, casey could not come out much though as it was to stressfull for her, it was my dads obession with rearanging furniture(and moving her aroundto much) and caused her kidney failier after that happy wont let the pigs out of her sight so nothing happens to them like casey even perky has met the critters, she is a jack but has learned how to behave when the critters are around and of coarse Ripley thinks he IS a critter.