Trying to find a weird cartoon from the 2000s

There was a short cartoon I’ve been trying to find with no luck. I saw it various times on TV but I’m not sure what channel it was on, maybe it was HBO kids and it was around the 2000’s.

So the short cartoon was about something (maybe it was a person that was a god or spirit?) that wanted to steal or get something from a man but couldn’t and could transform into different animals (I think at one point transformed into a eagle). So it transformed into a fish and got near to a woman (who was the wife of the man) that was drinking water in a river and jumped to her mouth, she swallows the fish and it transformed into a baby. She later gives birth to a boy and the boy tries to get the thing he wanted to steal or get but the dad didn’t let him. I don’t remember how it ended but maybe the boy now grown up finally got the thing he wanted and went away.

I’ve tried to find on google and YouTube with keywords but nothing would show.