well i thought that it was the litter at first, but i heard that most rats go through a sneezing stage when they go to a new home. i also have a natural bedding, that is, i believe, the number 1 recommended brand to use. so it was prolly just their way of getting ajusted to their new environment. also my rats have been with other rats since the time they were born, these two came from the same cage and i believe the same litter. they get along fine, except for feeding. thank you for your advice i definatly needed it i will try to feed them seperatly from now on. thanx