i'm sure it's more than just retrievers, but i got a kick out of this last weekend. i took my pups the the park to let them roam around (its a dog park). something on the gorund was blowing by and one of my labs promptly pounced on it and ate it... she also eats locusts after batting them from the air, and chased 2 butterflies around snapping at them the same day. frisky, and dedicated...