Rats sneeze because there is something bothering their noses or they are stressed out.
Dirty Bedding, ammonia, odors that they shouldn't breath, lots of things can cause a rat to sneeze.
Trying to figure it out can be a bear but if you don't it can turn into a respiratory infection and the rat becomes food.
Ammonia build up is a very common cause.
You can't keep fleas off your rats if your other animals have them.
Treat the house and the dogs and make sure the rats are outside when bombing or spraying the rooms.
Rats make great temporary hosts for fleas![]()