1 block tall animals are suffocating in carpet. I didn't break it it was just a bug in the latest MCPE update
What I thought would happen is that my dogs would be in my dog house (which is floored with carpet) would be there
What actually happened was that I found no dogs the floor was carpeted with XP and I saw the last dog suffocate.
How to recreate
Place a 9×9 area with carpet then push an a 1 block tall or less mob on the carpet and you'll see it Suffocate in the carpet.
This bug has been previously reported as the issue linked. If you follow that link, you can confirm the issue happens, and vote for it to be fixed. In the future, please search before creating a new ticket. Thanks!