On airplane-related sites I go by the name of "AirDOGGe"....Continuing a theme as you can obviously see.
Here's my animated AirDOGGe avatar I use on said aviation-airshow-air-race-related forums. I made it using photos of my departed canine buddy SASHA plus some aviation goggles and leather flight helmet I found on a pilot's supply website, plus a USA flag background from yet another source.
A little Photoshop-massaging brought them all together, and my favorite ANIMAGIC GIF ANIMATOR utility allowed me to simulate motion.
Sasha will pant and smile like that forever now.....