Rabbit and Parrot
Snail and Snakes
Seahorses and camelons
All animals leave feces behind since they digest food. Though for some it is nearly impossible to see their droppings.
If you mean land animals, behind the cheetah would come the pronghorn in second place.
Carbon
Snail and Snakes have 360 vision and can see behind them self with-out looking back or turning around. This is a good hunting ability. Although the snail cannot fight pray because it is very delecate and can not hurt human or bigger animals.
1. You cannot see objects that are behind objects you have clear vision of. 2. Any object behind a light source is invisible
What do you see first when someone passes by behind you?
All you do is throw a snowball at camera 2 so it cant see anything. Then hide behind the wall so camera 1 will not see you.
carbon
Cephalization has great importance in the evolution. It is considered as great achivement by the animals. Besides its advantages, it has some disadvantages too. The disadvantages of cephalization are 1. The animal cann't see what happening behind its head. 2. Head can be moved upto 180 degree angle in most of the animals including humans. But it is not true in case of birds.
You might see a telescope left behind or a asteroid on the surface left behind.
Some animals can see in the dark with their big eyes.