So there is a video making its rounds of what would happen if you photocopied water. While we won't spoil the surprise, it might not be what you would expect.
If you want to celebrate your birthday with your pets, its important you know what to expect. Your dog will be down for whatever birthday getup you put on him, but your cat will certainly judge you for the shame.
So when planning for your pets as part of your birthday, plan accordingly. Or you might be on your cat's sh%$tlist until the next one comes around. Take a look at some Happy Birthday Memes for a laugh.