Rabbits have favorite tastes like humans too.
But another point is this: rabbits are smart. They try a tiny bit of new food they do not know and then wait for around one day. If they stay healthy and have no problems, then they eat the whole food.
Maybe you replaced the food before they could complete their "test", so they could not decide to eat ...
Rabbits in nature are only grabbed, if they are hunted down. Because of this they all have a strong aversion against being grabbed and carried around.
But if you do it gently and give your bunny time to became used to it, then it will be an unpleasant, but tolerable thing for your rabbit. You could help him by being calm during the handling and by giving him ...
If you like to understand the behavior of your rabbits at home, you could try a look at the rabbits in nature. (The domestication of rabbits is not long enough to destroy all their behaviors they learned/stored in million years of free life.)
Rabbits in nature have every time (without little times in winter) a lots of food around them. They live in a green ...
Plants that many people can find in their backyards can also be good options for rabbits to chew on. Check out this list of woods, vines and other plant materials that are safe options for pet rabbits.
Safe woods for rabbits to chew:
apple (seeds are toxic),
Fresh wood cut from the right kind of tree would be without risk for your rabbits.
Easy to remember trees are:
Apple (the kind of apples humans could eat)
Cherry (the kind of... see above)
(I will add the others, when I find their English names.)
If you cut the healthy twigs fresh from the tree the wood is tasty for your bunnies and you ...
Are there some precautions I could take for their safety or if not, what can I give my rabbits to keep their teeth in check? Is hay really enough?
Make sure that the respective wood is not toxic to the rabbits. Some wood is toxic to everything on Earth.
As for infections, pathogens... just boil the wood in water for at least 30 min. That should be quite ...