I used to see it a lot more than I do now.....I can't stand to see kids or animals in the back.....Years ago, I was behind a pickup with a doberman pacing back and forth.....I realized she had a puppy in her mouth.....before my eyes, she dropped it out of the truck, and it fell into the sewer opening in the street. I just prayed that it died instantly. The pup was gone, and I couldn't catch up to the truck...plus the fact I was in total shock. She was so nervous, I guess she was trying to save her pups... I'm assuming the owners were taking the pups to the vet for tail docking or something....Why they couldn't put them all in the cab of the truck, I don't know.....still bothers me a lot.