Yes they do! When Dexter bit me she looked as upset and confused about it as I did! She loves papaya but she hasn't figured out how to pick it up by herself because it's so slimy so I was trying to hand feed her. Dexter usually bites into the blueberry and it sprays all over the place and juice runs down her chin and then she chews it! One time I took her to my work for a visit and when I got home I realized she had blueberry juice covering the underside of her tail, I was kinda embarrassed!