I killed a cow with a wooden sword and it teleported a few feet away from me then died. It was not lag.

Put the summary of the bug you're having here

What I expected to happen was...:
The cow to take knock back then die in front of me.

What actually happened was...:
The cow teleported a few feet away then died.

Steps to Reproduce:
1. Have a wooden sword.
2. Be in a savanna on top of a large hill.
3. Have a medium sized lava pit near by.
4. Lots of grass on the ground.
5. Use the slashing power on the cow each time.
6. Kill the cow.