According to jebdogrpm who posted this video on YouTube, the animal's foot was stuck underwater at a petting zoo.
You can hear the baby goat crying out for help before out of no where a rescuer appears and seems to push the baby goat to safety. The pig swims along side the goat until they are both back on dry land.
Thankfully it looks like both the pig and goat will be okay.
As for the hero pig? Nearly 600,000 people have watched the video so I think it's safe to say he has a few new fans.