What the Paw?!?! Wednesday

So we were looking through Mom's camera last night and found some super disturbing pictures.  We would love to know WHAT THE PAW is going on!  Sammy, I think we need your expertise!
This sure looks like an alien to me.

AAAAAAIIIIIIEEEEEEE!!!

Giant alien heads???

The aliens apparently have stolen a car.  This is terrifying!

WHO IS THAT GUY AND WHAT IS HE DOING WITH OUR THE MOM?!?!?!?!?!  Have they gotten to her?  Her shirt says "Obey Me."  We're askeered. And we sure are wondering what makes her think a stoopid shirt is going to make us obey.  That purple guy even visited us at home.  He gave EG poofy tail, so you know he's bad news.  EG almost *never* gets poofy tail.  Mom looks way too happy with that guy.  Something's going on for sure.

Mom says that it was no big deal.  A bunch of weirdo runners get together once a year to celebrate a Martian invasion or something.  It sure sounds like a big deal to us.  Those guys are askeery looking!
WHAT THE PAW?!?!?!?!?!