My Sketch will retrieve and retrieve and retrieve until my arm feels like it is going to fall off. He would sooner retrieve than eat...and that is a first for me with shelties! If we are playing inside, he will bring the item to me and drop it in my lap. If I ignore it, he pushes it around my lap with his nose to make sure I have seen it. And if I tell him the game is over, he looks totally devastated, walks away with the toy...then turns around and comes back to dump it in my lap again just in case I might have changed my mind. He will do this again and again. LOL Outside he runs like the wind to fetch and bring it right back to me, dropping it on command at my feet.
Simba will race with Sketch to retrieve whatever I have thrown and if he reaches it first he will carry it about halfway back towards me and then drop it and stand over it barking at Sketch to come get it and carry it back the rest of the way...he does this every single time. He has never once brought it back the full way. Even if I play alone with him he still drops it halfway and then looks around and calls for Sketch to come do the "home stretch" and when Sketch doesn't appear, Simba just lies down next to the toy as if to say..."Well, I guess I will just have to wait here for Sketch to come do his official last leg duty."
Faelee tries to outrace them both, knocking them tail over tea kettle if need be (which is easy for her to do because she is such a huge sheltie) to get to the ball/toy/frisbee first, then she races around and around Sketch and Simba, just out of reach, tossing her head and shaking the toy to tease them. Sketch gets royally PO'd at her and tries to run her down to get it back, Simba just barks at her. So...when we want a peaceful fetch game we leave Faelee in the house... or put her in another room with a chew if we are playing inside!!!!!!! LOL
Our most recently adopted sheltie boy, Dakota, couldn't care less about retrieving or playing with toys and just watches from the sidelines as if to say..."These games look kind of silly to me". Maybe in time he will join in.
Trini