This has nothing to do with horses, but it does involve one of my pets.... my cat- Pengin. One afternoon a robin was taunting her through the window. This is after about an hour of just sitting and watching when she decided she couldn't take it anymore and had to at least try to get at it, the robin is unphased.
To be fair, she is actually a decent hunter, better than I would like. She has recently figured out the doggie door and likes to bring us mice (sometimes still very alive) at 2 am.