Who doesn’t love a good brain teaser? After all, they’re like exercise for your brain. These mind games will help keep your memory intact and your brain healthy. Try out these brain teasers and see how many of them you can figure out.

We’ll start out with a few easier ones. While these critters are a bit hard to find, most people can find them in 10 seconds or less. Yes, there really is an animal in every single photo. Can you find them?

1. What animal do you see in this photo? While most of us are more likely to see this lean guy in a zoo, here it looks like he might be out an about in the wild. Do you see him yet?

2. This one might take you just a little bit longer. Some animals have really good camouflage and blend in with their surroundings. Can you see it yet?

3. Scan this photo slowly if you want to catch a glimpse of this animal. When you see it, it’s probably not at all what you were expecting to find, but it is an animal!

4. Once you see this one, it will really stand out. But it might take you a bit. There’s more than just bark hanging around on the side of this tree.

Now we’re going to try some that are a little bit harder. Actually, a lot harder. These critters have perfected their camouflage skills. Are you ready?

5. You saw this picture at the top of the article. Did you see what was in the photo then? If not, what if we told you that you’re searching for a cat. Can you see it now?

6. This one really stumped me, but once I saw it I couldn’t unsee it. Can you see the hidden kitten in this photo?

7. This one is super tough! Can you find the big animal that calls the North Pole its home?

Did you give up yet? Here are the answers: 1. The giraffe is standing to the right of the image in front of a tree. 2. The big toad blends in with the leaf. 3. The wolf is to the left of the image and is between two trees. 4. The toad is facing up and is resting its legs on the branch.

Now for the harder ones.

5. Can you see the hidden cat now?

6. Here’s the camouflaged kitty. Do you see it?

7. This one was super hard to find. Can you spot the polar bear?

Be sure to share these unbelievable photos with your friends and family and see what they think about these crazy brain teasers.