It depends on how he is using his teeth, if your bunny has reached sexual maturity, then there will be some nipping and scratching while he quietly honks. That's male bunnies' way of saying i love you. But it does hurt a tiny bit (like being pitched by a child). Getting him neutered will fix it. Or do what i did with my bunny, i taught him to hump a teddybear when he started doing that, now he nips and humps the teddy instead of me.
I noticed you said that your brother in law's bunny only gets a small hand full of hay a day. For a healthy bunny, you should have plenty of hay available 24/7. They need to have UNLIMITED access to hay. The only thing you need to limit is the pellets and veggies. Hay to bunnies is like water to betta fish, MUST ALWAYS HAVE HAY.
Handful of pellets (dont get the ones with lots of colorful stuff in it, they are unhealthy for the bunnies (even the workers at the pet shop will tell you that) they are mostly either all carbs or sugar, too much of either will result in bunny gas - bunnies can't pass gas, so having gas will be extremely painful. I learned that the hard way, had to rub my bunny's tummy for 4 hours before it passed.) Try to aim for bunny pellets with these Nutritional values.
Fiber 18% minimum (20 -25% best)
Fat 1 - 2% max
Protein 12 - 14% max (long-haired breeds may need higher)
Calcium 1% max
Bunnies always need a daily 2 cup of veggies per 6 lb of bunny. If they are new bunnies, to introduce the veggies one bye one, and mix it up for variety.
Give fruit in tiny amounts, bunnies have terrible sweet tooth, and will beg for it constantly, dont give in. 1-2 grapes, or small slice of apple a day at MOST.
Important note: Pooping is good, eating and pooping even better. Bunny should ALWAYS be pooping, even if he is litterbox trained, they will still poop a little bit running around the house. If the bunny does not poop in 24 hrs, take it to the vet.
Last edited by Aluka; 12-28-2012 at 08:20 PM.