i took my 11 month old 3quarter bull quarter greyhound out last night first time she ever seen the lamp took her about 3 diffrent feilds with bunnys in before she got the jist of watching the beem, then got into a smaller field and held her head till she seen one bunnny right on the edge just hoping along and then she clicked that she could see somthing, moved further along the feild to find one more and let her go she ran well enough for me she did not catch but i think the idea is there now, it was perfect ground to run on and no obsticles for her to hit, i will be out tonight and going to