There's a secret dog hidden in your YouTube video timeline

YouTube hasn't ever been one to skimp on the Easter eggs, but this is a new one for me.

It's hidden away on the timeline that charts your progress through a video. If you highlight that timeline and hold left — either left on an attached game controller, or the left arrow key — in certain versions of YouTube (I'll get to that in a minute), you can summon a dog.

It takes a bit, so be patient. If you've watched any of the video, it'll rewind first. Then you want to keep holding left for another 10 or 15 seconds. Eventually, a little, brown dog, possibly a Corgi, will trot across your timeline, from left to right. Read more...