What breed or mix breed of dog you have had shocked you?

I like to browse Craigslist's pet section. I have seen an array of mixed breeds that seem weird to me, but lately I've seen more and more of those mixed breeds. One in particular I saw that I have not seen elsewhere was a Chihuahua pitbull mix. The pitbull was the Mama. Seemed so weird to me, but the babies were adorable. On one of my Facebook dog pages, someone posted about a Westhighland Terrier getting a Rottweiller pregnant. That seems weird to me, but I bet the babies are precious.