name of mule,donkey,skeleton,and zombie horse.

Put the summary of the bug you're having here

*What I expected to happen was, I was looking for new spown eggs in the snapshot 16w21b

*What actually happened was I saw the name of mule was: spawn entity.mule.name
Describe what happened here

Steps to Reproduce:
1 Go to inventory miscellaneous section
2. scroll down to bottom of section
3. hover with mouse over mule egg and other new horse/donkey spawn eggs