When riding on a saddled pig, baby pigs are spawned in.

Put the summary of the bug you're having here

What I expected to happen was...:
Describe what you thought should happen here
Riding a saddled pig
What actually happened was...:
Describe what happened here
I could ride the pig, but, baby pigs appeared from nowhere.
Steps to Reproduce:
1. Spawn a pig.
2. Place a saddle on the pig.
3. Right-click to ride the pig.
4. Baby pigs will appear when the pig is ridden, every time.