In the center of the coloring sheet you can see a fierce crocodile with its mouth spread wide open. The black and white cat to the left of the crocodile is looking on with a mixture of fear and awe, while the large black and white dog to the right of the crocodile is holding a stick in its mouth and also looking teetering on the edge of fear. To make this page really come alive, I would stick to its natural colors – using grays, browns, and greens for the animals, and blues and greens for the background. For a pop of color, maybe a hint of yellow for the dog's fur or the crocodile's scales, and a pop of pink or a bright shade of blue for the cat. The background can be filled in with a gradient of light blue and light green to bring the picture together.