Actually, cedar is the really bad one. But pine can be bad too. If the pine product is kiln-dried, it removes the majority of the harmful chemicals from the wood. The wood pellets I use are kiln-dried and are sometimes pine, depending on availability.
So in short: kiln-dried pine good, not kiln-dried pine bad.
Some rabbits also eat certain types of litter. I stopped using Carefresh when two newly-rescued buns thought it was food.:shock: That's more common with corncob litter.