The most important muscle in the bladder is the detrusor muscle. In normal circumstances, when the bladder fills with urine, it can stretch to hold the urine. When the volume in the bladder reaches close to 300 cc, the stretch in the wall of the bladder can trigger a nerve response to initiate urination (micturition).
by Sandi Ackerman. .A rabbit's diet should be made up of good quality pellets, fresh hay, (alfalfa, timothy or oat), water, and fresh vegetables. Anything beyond that is a treat and should be given in limited quantities. Pellets should be fresh, and should be relatively high in fiber (18% minimum fiber).
What do Rabbits Eat at These Pet Rabbit Life Stages... 1  Weanling bunnies and youngsters up to adulthood can be free-fed pellets and alfalfa hay.  Young adult rabbits should receive approximately 1 ounce of pellets per pound (of rabbit) daily, plus sufficient timothy, orchard or oat hay for the rabbit to eat at will.