What to do with frozen kit

Hi all, first time rabbit keeper. We have our two does (sisters never separated and raised together) and one buck (a rescued pet Rex from Craigslist) in a colony style setup (8’x16’: 2x3 galvanized fencing for floor so grass can still come through).

We introduced them in mid-December b/c we were having issues with them digging out of our tractor set up (buck separate from does). Does were between 6 and 7 months and buck around 9.

They both gave birth this past weekend (we think both did anyway) and seem to be sharing a nest - we found 11 babies all together.

It’s been freezing here since they were born but everyone was doing okay. I separated out the buck and put him inside a small tractor setup (1’x4’) for a few days b/c he was harassing one of the does and she was running away squealing. But the does won’t go into their burrow boxes (I’m assuming they are for feeding time b/c haven’t lost a baby yet) and just sit up against the wiring next to the buck…they are all quite close and like to cuddle.

Anyway, last night I found one of the babies frozen solid in the bucks tractor. Seemingly unharmed. I warmed him up but then saw his nails turning blue and called it.

My question is, what do I do with his corpse? He’s currently in our chest freezer until we decide. My purpose with the rabbits is to raise ethically raised meat where the animal can live as naturally as possible and I don’t want to waste the life by tossing him in the woods or something.

We have 2 100lb dogs. Can I just give them the corpse raw? We were planning on giving them the scraps anyway. What would you do?

It’s also supposed to be lows of 3 degrees next week…any advice appreciated!