How to identify an animal by poop?

Pay attention to color, smell, texture, and shape. With this, it is already possible to deduce the size of the animal and, mainly, its diet. “Dark stools, for example, indicate consumption of animal proteins, that is, it is a carnivore”, explains Roberto do Val Vilela, a biologist at the São Paulo Zoo. The clues are not always clear: if the stool is very liquid, it could be a sign of a reptile or amphibian peeing at the same time… or it could just be a sign of too much water in the diet. “Hunting poop” might not seem like a very cool hobby, but it is essential to the work of biologists… and to the animals themselves. “It’s a way of knowing if there are enemies in the area or if they’ll have a chance to have a good lunch”, says Vilela.

Suspects #1 of doing #2

See if you can figure out, among the animals below, who made the feces next door. Answers in the corner of the page

1. Molhadinho?

Don’t be fooled by the whitish “varnish” that covers this animal’s feces and makes them a bit pasty. He loses little water in excretion: the substance, in fact, is uric acid, released with the fecal mass through the cloaca

2. Eco poop

The smallest representatives of this family have poop that is brownish or the color of the food they are fed (white stools are a sign of disease). They eliminate a lot of calcium carbonate, which is good for the environment in which they live

3. Red Diet

Notice the orange or reddish hue? It’s just that the animal spends a long period in the cold and ends up eating what it sees ahead: from red fruits and roots to flowers, ants and wood. Sometimes the odor can even be a little sweet!

4. Send it all in

Varied residues indicate a rich “gastronomic repertoire”. In this one, sometimes there are remains of fish scales and bones of turtles, mice and birds. And the poop is wet, since the animal does not have a bladder and excretes liquids along with the feces.

5. The Pioneer

Dark mass? Indication of a high protein diet. In this case, ants and flies. The difference here is this membrane, which makes the stool pliable and shiny. On the evolutionary scale, it is the first class of animals to urinate separately.

6. Damn you!

Have you ever taken a ′′ shot ′′ like this? The animal relieves itself while flying, without any embarrassment The white color and liquid state are the result of a process that eliminates uric acid and feces together, through the cloaca

Continues after advertising


7. Intestinal tugging

This animal’s waste looks like flakes floating in the water, with a color between translucent yellow and gray. There’s also a solid, greasy, shiny part, amber, made from a substance that protects your intestines from hard food.

8. Take a good sniff

Greenish and soft, it has a very typical aroma: of plants and grass. The frightening amount is also a good tip: the animal consumes huge portions, which pass through different stomachs and then are chewed again.

9. A stumbling blockThis one looks like a block of sawdust! This compact excrement is the result of a voracious (up to 180 kilos of food per day!) and fibrous diet. In fact, it has so much fiber that the poop is being used to make paper and even shoes.

10. P, M or G?

It smells strongly of blood and decay – a sign that the diet includes mammals. The size varies: if the animal is bad at hunting, the portions are small. If he’s overindulged, there are chunks of big bones mixed in.

11. Ball club

Thought of meatballs? So it is. This animal’s digestive system works in cycles, breaking down food to improve digestion. The texture is linked to the diet: remains of logs, bushes, fodder and vegetables (yes, carrots!)

12. Seed and fertilizerStrong smell, dark color, fillet shape? So almost certainly the feces are from this animal. It doesn’t digest seeds well, and by eliminating them, it helps to spread them. In addition, its excrement is a good fertilizer, rich in phosphate and nitrogen.

• In mythology, Prometheus was bitten by this animal and ate its feces to regain strength… Yuck!

• Amber was once widely used in the cosmetics industry as a perfume fixer!

Fontes Roberto do Val Vilela and Oriel Nogali, biologists at the São Paulo Zoo; Felipe Toledo, zoologist at Unicamp’s Institute of Biology; Wilfried Klein, zoologist at UFBA; Christina Simmons of the San Diego Zoo; Cláudio Gonçalves Tiago, biologist at the Center for Marine Biology at USP; Fernando Zaniolo Gibran, biologist at UFABC; and André Victor Lucci Freitas, entomologist at Unicamp

Answers 1: Alligator, 2: Fish, 3: Bear, 4: Eagle, 5: Frog, 6: Pigeon, 7: Whale, 8: Cow, 9: Elephant, 10: Snake, 11: Rabbit, 12: Bat

Continues after advertising