That was one of Bill Clinton's favorite phrases. It's been around for a long time.
https://www.barrypopik.com/index.php/new_york_city/entry/if_you_see_a_turtle_on_a_fence_he_had_help_getting_there/
Summary: He thinks Mueller is a grey-hat working for Trump in exchange for a pardon for his role in U1 and that he has been tasked with additional investigations, in which Flynn was very helpful.
He almost figured it out, but not quite.
Nah. Clickbait. Pic related.
>It's for animals
I know next to nothing about pharmaceuticals; but I do know ketamine is still used for people too.
https://en.wikipedia.org/wiki/Ketamine#Medical_uses