Not something you'd want to find in your backyard! Not sure if this is a Python or a Boa.
Apparently, late afternoon is bath time for many of the Robins in Tom Sawyer Park. This one spent considerable time lathering, rinsing and repeating.
And this is what the creek sounded like. You can start the sound playing and then view the photo at full size to feel like you were there. Watch out for splashing!