Have you ever seen a dog do this?

We dog-sit for my brother and sister-in-laws dog(Nilak) all the time. The first time we sat for her I freaked out and snapped pictures of this crazy dog chewing (or so I thought) on her foot! I thought for sure she would go back home with her foot ripped apart and needing to go to the vet. Come to find out, her breed( American Eskimo) is known for cleaning themselves like cats! So these pictures are of her "sucking" on her feet to clean them. Now I think it's the funniest thing but my cat, Mia, looks like she thinks it's disgusting! Nilak's eyes are closed and she's falling asleep. She also grabs her tail and combs through it with her teeth. I haven't caught a picture of that yet but I will. We'll be dog-sitting in a couple of weeks again. Way too cute!