K.
I wash my son's "lovey" every week because it gets so gross. You can put the stuffie in a delicates bag if you're worried. If you have a front-loading washer, it should be pretty gentle anyway. You can put them in the dryer, no problem.
Honestly, I put pillows and down comforters in the washer too (I have a toddler who occasionally accidentally pees on them) and as long as you put some tennis balls in the dryer with them, they don't get lumpy either.