Llamas don't spit in caravans

When a llama is in a caravan and you hit it, the llama doesn't spit back and instead runs around in circles.

Steps to reproduce:

1. Leash a llama around other llamas
2. Hit one of the llamas in the caravan
3. Observe its behavior

Observed results
The llama doesn't spit and just runs around in circles

Expected results
The llama would spit back at you