Baby foxes from the bug MC-134755 weren't fixed (found by James Lai)
How to reproduce:
1. Spawn the baby foxes in the middle of an ocean, or a pool with no escape
2. Wait a while, and they will begin to drown
MC-238521 Baby Foxes drown when swimming in water because hitbox is too small
MC-134755 All short mobs drown just below the surface of water