I love Tiger Swallowtails but don't actively encourage them, just haven't looked up how.

My favorite caterpillar is the "wooly bear" that we see in the fall that are black and orange.

Buyorsell888, that sounds like the same caterpillar.

Another very striking caterpillar occurs on the ragwort weeds in my yard. I don't remove all the ragwort because of them. They have bright orange and black stripes, see photo below, and apparently get a poison from eating the plant then have bright red on the black wings to act as a warning for the moth, the Cinnabar moth. Apparently they have been imported to some places to control ragwort. I never seen the moth but would like to. I found a dead Garden Tiger moth in my garage but haven't seen a live one of them either. I guess I need to hang out at night under lights outdoors.

Here is a link that might be useful: photo

The imported Cinnabar moth started showing up in the 1970's; I seldom see one in the city.

Butterflies do not use a "watering hole" per se, but would use a damp area surrounding a water source. The damp area would have to have a mineral content; this is what they're after, not the actual water.

I've seen so many of the orange & black caterpillars coming into my garage. Do they hibernate? What do they eat? I'm partial to them, have been putting them in one corner of the garage. Will they live through a harsh Minnesota winter? Will they become food for any other "things" in my garage?