i brought my deck to my friends house to

Yes — chewed cards are usually still perfectly usable. Bunny teeth mark them and scuff the corner, they don't ruin the printing. But do two things first: check that nothing is missing, and flatten them back out.

1. Count them tonight. This is the part that matters most. If a card or a torn corner is unaccounted for, treat it as possibly swallowed. Paper itself isn't toxic, but a torn chunk can irritate the gut, and rabbits get dangerous fast if they stop eating or stop passing droppings — no droppings for half a day, hunched posture, drooling, or refusing hay is an emergency, and you want a rabbit-savvy vet, not a general one, and you go on suspicion rather than waiting to see.

2. Clean, gently. Food or saliva residue:

• Soft dry brush first, over a table.
• If something is sticky, a cloth barely damp with plain water, then no water at all near the edges.
• Never alcohol, wipes, oils, or cleaner — the ink will lift or go matte and stay that way.

3. Flatten. Warping is the real damage, and it fixes itself. Lay the cards in a single neat stack between two sheets of plain paper, put a book on top, and leave them somewhere dry for a day or two. Don't put them back in the case curled or damp — that's what leads to permanent ripple and sticking.

4. Store them back in the box where humidity can't reach them, and keep the rabbit out of the reading spot next time — a cardboard box on a low table is basically an advertised snack bar to a bunny.

One small thing: if a card's face is torn or rubbed past legibility, that one won't read cleanly for you. If it bothers you, replace just that card and keep the rest of the deck — the deck doesn't have to be all-or-nothing to feel right.