My sister and I are trying to find the title of a movie we saw in grade school in the late '70s or '80s. It was animated and there was a song about a character named Mr. Mc Bow Wow.

I think there may have been hippos in the movie. This seems totally random but we know it it exists and we cannot figure out what it was! Please help!

I have found a movie called Hugo, the Hippo that seems to fit what you are talking about. One poster on the blog talks about a song about "Mr. Mabowwow". Is this it:

Hugo The Hippo - Subzero Blue

Hugó, a víziló (1975)

OMG!! Yes!! That is not at all how I remember the movie but that is definitely the song so it must be it!! Thank you! This has been driving us crazy for years.

Glad I could help in any way. :)