Rats- is Fleece blankets, and shreded paper(newspaper) or (notebook paper) safe to use on rat beddings, ?
Foods do not increase muscleExercise does thatBut proper foods maintain muscleThe answer given by moody is pretty darn good so go with that.
Fleece should be fine, but you always want to avoid newsprint if you canYou should even avoid dyed cardboard as a chew toy! Inks and dyes can have any number of toxins in them that are harmful to small pets A good option though is toilet paper, plain white unscented toilet paper, and why not? Its made to absorb urine isn't it? And small animals will often use it as nest building material as well as beddingAs for fleece, the only thing I would do is watch that fibers don't get caught around limbs or tailsI know it's one of the things not suggested for gerbils (my pet of choice) because they shuck their tails if they get caught, and fleece fibers are strong enough that if tails did somehow manage to get caught, the tail would die and fall offRats don't do that, to my knowledge, but it would still be painful and annoying for you and your rat, so it would be safer to go with some other form of bedding like Carefree or the equally good walmart brand (can't remember the name of it off the top of my head)Also, I second Taste of Rain's note not to use pine like others have suggested, its has oils that are toxic to rodents as well and are best avoided.