CRAZY: Proof see link below, baby girl killed by Pomeranian dog, also Chihuahua involved in another incident.
http://www.lawyerfordogbite.com/dangerous-dogs/dangerous-dogs-the-family-pet.html
And here below a Dachshund, & Yorkshire Terrier were involved in fatal attacks.
http://www.cdc.gov/homeandrecreationalsafety/images/dogbreeds-a.pdf
Also interesting reading.
http://www.scribd.com/doc/10150239/Breeds-of-dogs-involved-in-fatal-human-attacks
There was a book 'Fatal Dog Attacks' by Karen Delise , it has statistics backed by 37 years of studies, well worth reading, it's still available on Amazon second hand.
One extract from the book; Here is a list breeds that have caused at least one fatality within the past two decades:
Akita; Australian Shepherd; Boxer; Bulldog; Bullmastiff; Chesapeake Bay Retriever; Chow Chow; Cocker Spaniel; Collie; Coonhound; Dachshund, Doberman; Golden Retriever; Great Dane; Hound-"type" (may include crossbreeds); Husky; Japanese Hunting Dog; Labrador Retriever; Lhasa Apso, Malamute; Mastiff; Mixed-breed (where dog was known to be a mixed-breed, does not include dogs whose breed was not known); Newfoundland; Pit bull "type" (may include crosses or misidentified individuals); Pomeranian, Rhodesian Ridgeback; Rottweiler; German Shepherd Dog; Saint Bernard; Sheepdog; Sled-"type" (may include crossbreeds); Terrier-"type" (may include crossbreeds); West Highland White Terrier; Wolf/Dog hybrid, Yorkshire Terrier.