Apparently I Own a Kangaroo
Many people have commented that my puppy Helo looks like a kangaroo. Fortunately I have taken pictures of both to compare:
Exhibit A: A Kangaroo.

Exhibit B: Helo.

I can certainly see the resemblance. At the very least, I think Helo looks more like a kangaroo than this:
Exhibit A: A Kangaroo.

Exhibit B: Helo.

I can certainly see the resemblance. At the very least, I think Helo looks more like a kangaroo than this:

Comments
His mother was a German Shepherd that was supposed to be for breeding. Apparently the neighbor's dog had other ideas.
All I was told about the father was that he was a "german mix".