Here's an old piece of video that's still worth crowing about -- from the PAX network series Miracle Pets, which premiered in 2001.

In this segment, narrated by Alan Thicke, a couple shows and talks about the unusual relationship that blossomed between a stray kitten that appeared in their yard one day and the crow that showed up with him.

The motherless kitty was about three months old when it first showed up, and the couple watched (and videotaped) in amazement as the crow went about feeding the kitten worms and protecting it. When the couple eventually took the cat into their home, the crow would stand outside and wait for it to come out.

The video was posted to YouTube about a year ago -- after a man came across it while going through his mother's old VHS tapes -- and it's gotten more than 4 million views since.