On a recent outing, I stopped for a quick dip at a mountain stream 'swimming hole', and found a tiger beetle that must live nearby. It would sit still long enough for me to consider taking a picture, but would run away if I got too close for too long, and then return as soon as I looked away. It also wouldn't let me look it in the face, always turning away... I really wanted to see its sabre teeth!
I finally got one picture that was acceptably focused and exposed:
I found out later that these can live for three years, eat ants and other insects, and 'can bite if mishandled'. The full Latin name is Cicindela chinensis japonica.