Quote Originally Posted by ch312 View Post
what could sneezing mean? the charcoal male has been sneezing alot since i got him but his brother not so much. my jumbo albino has just started sneezing a little bit but nowhere near as much as the dark male. im using horse pellet bedding...
Sneezing is most often caused by upper respiratory infections, and sometimes allergies.

All rats carry a bacteria called Mycoplasma. It is passed through contact, before birth, and through short distant aerosol (sneezing).
Mycoplasma usually surfaces when the rats immune system is suppressed or stress. This causes excessive sneezing, hunching over, coughing, poryphrin staining and other problems.

It's always a good idea to breed rats that show high resistance to myco, and are generally in good health. Healthy parents sire healthy offspring.

edit: Also, many rats do not show the effects of myco until they are adults. It's degenerative in many aspects and young rats often do not show any outwards effects.