They are mov animations I created a long time ago. You can scale them over a wide size range with good clarity. The image is 1920 X 1080. The 2 mice positioned side by side, at the top left of the image are to scale.
They are 1.25 seconds in duration. First the mouse fades in, Then it lights up with a right or left click, and then they fade out. I'm leaving two Dropbox links if to want to try them.
You can also alter there duration. Or, Export a frame with the mouse illuminated, save it to your library and just use a still image. You can probably find still images online you might like better.