Can rabbits chew on fig tree branches? What about pear tree branches?

I have fruit trees growing in my yard. Apple, fig and pear. I know the apple tree branches are safe for bunnies to chew but it was damaged when a neighbor's tree fell on it and I can't spare the branches right now. The pear and fig trees are doing well, though. I'd like to use them for my bunnies but I want to make sure they aren't toxic.