You can't place a lot of animals

Put the summary of the bug you're having here
You can't place too many animals
What I expected to happen was...: it won't glitch, lag and freeze
Describe what you thought should happen here
It shouldn't lag and freeze

What actually happened was..:
I was in creative and i decided to have fun an place a lot of animals in my city and it lagged and froze

Steps to Reproduce:
1. Place a lot of animals everywhere
2. Keep doing it until it lags really bad
3. It will freeze after a while