Curious about stuff in the usr/bin

I was looking through usr/bin and was looking at the names of directories. There are a few I cannot find anything about online, and cannot get to execute (or don't know the arguments). moo-outdated moo-outdated5.18 moose-outdated moose-outdated5.18 moose-outdated5.30 If anyone knows about these, it would be cool to learn about!