Bo Obama is not the first First Dog to occupy the White House, and he no doubt won't be the last.
But did you know that pets - from canaries to zebras - have been a fixture at the White House for two centuries?
And that more presidents had pets than did not? Ever wonder which president was the biggest animal lover? Who tamed lions on the White House lawn?
Presidents and their pets is the focus of a fascinating "infographic" produced by VetStreet.com.
For more details on presidential pets past and present check out the website for the White House Pet Museum (still just a virtual museum) and the official White House gallery of presidential pet photos.