The first sleeping cat is what the others will look like in terms of graphics. I've provided four color schemes that compliment the background of the app. The other two cats may be in one of the four colors. The sleeping baby cat is holding on to its tail and the power nap cat is stealing a snooze at the laptop. They are just rough sketches now regarding the poses. I can also make the cats similar in style to the foxes image by adding triangles; That was done in watercolor. I think it would add to the uniqueness you are looking for!