Anyone know this game that was always in ads?

Save the Pets I used to play this game and saw its ads frequently, so I got curious and tried it. It was more fun than I expected lol. All you do is draw a line to protect the animals, which sounds super simple, but it actually makes you think quite a bit. At first, I thought it was no big deal, but after a few rounds, I found myself wanting to see what the next stage was like lol. I started playing because of the ad, but ended up playing for way longer than I thought!