OK, OK — we get it. The selfie trend almost went away but — bam! — it's back and better than ever. Just recently, the word itself made it into Webster's Dictionary, and animal selfies are now leading a National Geographic ad campaign. No offense to duck faces, but NatGeo is on the right track with the whole animal selfie thing, and it turns out, there's a whole world of #petselfiez waiting to be seen. Ahead, check out 20 of our favorites. Woof!