ok so i was outside playing around with my car and my 76 yearold neihbor was outside walking her chihuahua this dog is her baby and her life and i saw them and said hi. well i go inside for a second and come back out with my moms and we see this black and white pitbull run across the street and grab the dog up shaking it like a ragdoll or a chewtoy people wur stoping in the road trying to help finally the dog ran off but after doing its damage.
I grab the dog up and took it to the vet they checked it over and said it had crushed ribs,punchured lungs and broke back. It had to be put down.......

It took animal control 45min just to come out and they still havent found the pitbull but from what was herd it has killed a poodle and attacked 3 other people before

Im worried because i have 2 chihuahua's myself