My dog Buddy is not afraid of my military trucks, tractors, etc. He likes to ride in my trucks. However, when I start my FLU419, he screams and runs off. I thought he was simply afraid of the noise or something. Then I remembered that he is wearing a Dogtra brand shock collar. We have 8 - 10 acres fenced in with an underground wire, most of which is laying on top of the ground. It turns out that something in the SEE is sending out a signal that is triggering the shock collar. Now I feel bad that I haven't kept him away from the SEE when I run it.