Help me to understand how my bunny died?

I posted pictures in the past few months of my bunny, Clyde. I was asking what kind of rabbit he was. I thank you all again for your help.

Today I went to feed him and his cage-mate, his son. I did not see his nose pop out of nowhere like I am so used to, so I peeked in and saw him laying stretched out. I called him and had a treat in my hand and he still did not come, so I knew the worst had happened.

I am unaware of any health problems he may have been having. He has been a lazy bunny who liked to lay spread out in his cage. When he was let out, he didn't run amok like the other bunnies.

However, he had 2 litters of bunnies and 2/3 of the second litter died. I took the last bunny from the second litter to the vet and he told me that it was likely low blood sugar. One of the bunnies looked as if he was having a seizure.

I did not want to face touching another dead bunny, so my roommate picked him up and put him in a box. She said that she seen some foam near his mouth. I do not know what could have happened. He had no wounds, or blood or anything so I know his cage-mate (his son) did not hurt him.

If you have any ideas, please let me know.

I'm so sorry for your loss.

Sadly, there are 101 things that could have caused this. The only way to know for sure is to get a post mortem done on him.

Please ensure to quarantine his bonded mate though in case it is anything catching.

How much does that typically cost?

Thank you for your suggestion. I have removed his son from the area.

That varies vet to vet so it might be worth giving your vet a call, but they can only do it if the body has been kept cool, so if it hasn't, then they may not be able to.