Why there is a horse sized bucket on my back deck...

Even though the dogs have two large water bowls inside the house they've let us know that they prefer to drink al fresco. We found this out when I brought home some horse buckets I bought used (no plans for my own barn - just couldn't pass up the price) and I then left the buckets out on my deck to be cleaned.

Well, it rained and when I next looked, the dogs were eagerly lapping up water out of it. UGH. So I cleaned one out, and now it is always filled with fresh water for them. They love to "tank up" from it before coming back in the house.