Why is my electric fence killing birds?
Even with a small charger like you have if a bird is eating at the fence line and touches the fence ! Wham ! It is dead. We spray our fence line to keep the horses and grass / berry vines from shorting the fence out. Our charger is a 50 mile running at 15KV with no shorts from grass/ berries before we started weed eating and spraying we did have a few dead birds but since then I haven't found one.

I did not notice you asked about dogs and kids. Kids will usually only touch the fence 1 time and the jolt keeps them from doing it again unless they are like I was and when wearing rubber boots I would touch the fence and a buddy yes we both got shocked but I would be expecting it maybe that had something to do with me becoming an electrician...lol. Dogs some times take a couple of shocks to figure out where the thing that bit them was and to stay away from the fence. I have never heard of a large animal or person being injured beyond the initial jolt.