The armadillo doesn't have its own hurt sound when rolled up. This is not the case on Java, where it plays its own hurt sound when rolled up.
Steps to Reproduce
Get an armadillo.
Get them to roll up by scaring them.
Hit/hurt them.
Expected Result
It should play its own hurt sound when rolled up.
Observed Result
The hurt sound is the same as when it's not rolled up.
Video:
Bedrock:
Java (for comparison):
Can confirm.