Great place to walk the dogs! The trail has 2 (bio-degradeable) poop-bag stations with trashcans. When I went, there was not a drop of water in the creek, but i expected that---Austin is in a drought and it's winter.
I visited at 2PM and found 4 other SUVs in the parking lot, but encountered only 1 woman with 4 large dogs (leashless) on the trail.
The trail stays near the creek bed and winds itself over it several times. My dogs were sniffing every rock on the dry bed, marking thier spots! It was cold today and very windy, but the trail is in a canyon and so the wind was not much of an issue. The large trees were barely moving because of the protection.
I saw no other wildlife, not even a bird or insect. But I suspect they are busy keeping warm someplace.