LOL....once in a while, we'll have deer crash through the fencing. And guess WHAT those horses think!?! The LAST time it happened, they were missing for a day because we didn't have the 'nose' to track 'em down. Plus we were on foot for the search.
After much huffing/puffing/heartbreaking panic, I decided we HAD to have a dog to help. (or else, annihilate all the local deer.LOL)
The Australian Shepherds are natural and versatile herding dogs - anything from ducks to cattle (and children). They are extremely intelligent [learned "roll over" in 10 minutes] and obedient and have a fantastic disposition. I and my wife considered every breed of dog available as a possible successor to our last aussie and finally decided nothing could top it, so we got another aussie.