This smiley faced alien is actually a tree frog. There are two species which look identical - the Grey Tree Frog and the Cope's Grey Tree Frog.
The only way to field identify these little guys is by their voices. I find it impossible to differentiate the two due to the sheer volume of sound emitted from them when the mating urge envelopes the pond.
I have to wear ear plugs when sitting or canoeing around the pond which is in front of my house. The chirping is so loud it echoes within my skull to the point where internal dialogue is almost impossible.
I know of one person who rented a back-hoe and buried a small seep in front of his house to erase all traces of these little creatures. I will confess to you that when I discovered this person's indiscretion - I was more vocal than any frog could be.
These frogs live in the forest but breed in wetlands and ponds. They blend in so well - locating them can be difficult.
When traversing forested areas and wetlands, please remember that there are smiling faces looking at you. Tread lightly and enjoy the frog's ear popping sounds as they are telling you that the area through which you travel is healthy and vibrant.
For us forest dwellers, their calls are reassuring; informing us that everything is alright within the green world we call home.