http://www.kendall-bioresearch.co.uk/moth2.htm#top

I only see them on weeds and try to watch not to injure them when weeding, as I like to see beautiful creatures have a place in my garden. Anyone else have a favorite caterpillar/butterfly or moth? What do you do to encourage butterflies in your garden? I've tried to put out a watering hole for butterflies some summers, and I still have one butterfly bush, among other butterfly flowers.

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

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.

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.