Leech: The interior structure of a leech is divided into 32 different segments, each of which has its own brain.
The leeches that I have driven several hundred miles to encounter are freshwater, bloodsucking, multi-segmented annelid worms with 10 stomachs, 32 brains, nine pairs of testicles, and several hundred teeth that leave a distinctive bite mark.
Two tubular, segmented hearts propel blood through the closed circulatory system of the medicinal leech and switch every 20-40 beats between two constriction patterns.
Medicinal leeches have three saw-like jaws (tripartite) with about 100 sharp teeth on each jaw. After piercing the skin they inject anti-coagulants (Hirudin) and suck out blood. Large adult leeches can consume upto ten times their body weight in a single meal [1].
The ultra-rare frilled shark species has over 300 teeth and jaws, like that of a predator and a snake-like body.
To date, there's only one species that has been called 'biologically immortal': the jellyfish Turritopsis dohrnii. These small, transparent animals hang out in oceans around the world and can turn back time by reverting to an earlier stage of their life cycle.
Flatworms, nematodes, and cnidarians (jellyfish, sea anemones, and corals) do not have a circulatory system and thus do not have blood. Their body cavity has no lining or fluid within it.
BATON ROUGE – Green blood is one of the most unusual characteristics in the animal kingdom, but it's the hallmark of a group of lizards in New Guinea. Prasinohaema are green-blooded skinks, or a type of lizard.
Snails have more teeth than any animal.
A snail's mouth is no larger than the head of a pin, but can have over 25,000 teeth (but these aren't like regular teeth, they are on its tongue).
The icefish of the Channichthyidae family are unusual in several ways — they lack scales and have transparent bones, for example — but what stands out most is their so-called white blood, which is unique among vertebrates.
Pigs like other mammals have a four-chambered heart. The right side of the heart pumps blood to the lungs (pulmonary circulation), and the left side pumps blood out to the rest of the body (systemic circulation).
It is an octopus. Yes, the multi-tentacled creature that has always intrigued us has three hearts and nine hearts. Read on to know why. The two hearts of this creature are made for the gills and are used to pump blood.
Such an enormous pressure would require a very large, strong and slow-beating heart. But, they postulate, instead of a single large heart, the Barosaurus probably had some eight hearts.
In the hagfish, the systemic heart pumps blood through the gills, and by way of arteries through the rest of the body. The accessory hearts are all located on the venous side of the circulation to pump blood back to the systemic heart.
Earthworms are one of the most common animals with multiple hearts. These decomposers can be found pretty much everywhere, as long as there's dirt for them to live in.
Can you guess what animals might have blue blood? Lobsters, crabs, pillbugs, shrimp, octopus, crayfish, scallops, barnacles, snails, small worms (except earthworms), clams, squid, slugs, mussels, horseshoe crabs, most spiders. None of these animals have backbones. Some of these animals are Mollusks, like the snails.
Taste sensations
Other animals naturally have no tongues, such as sea stars, sea urchins and other echinoderms, as well as crustaceans, says Chris Mah via email.
Based on the discovery of a single tooth, researchers say they have identified an ancient species of giant platypus.
Kangaroo rats, according to scientists, are the only animals that can exist without water. According to the findings, they do not have any water in their bodies for any of their digestive functions. Kangaroo rats can survive in deserts without ever drinking.
Earthworms are invertebrates, which means they do not have a backbone. In fact, they don't have any kind of bones, legs, eyes, or teeth.
Animals that don't need sleep (bullfrogs and dolphins) Animals that don't need rebound sleep after using up all their energy (bees) Animals that show harmful side effects from sleep deprivation (humans)
ABOUT. The babirusa has been called "a wild pig with a dental problem." They have remarkable tusks or canine teeth that can grow right up through the skin in their snout and curve back toward their forehead.
Hydras are the relatives of jellyfish with tentacles. You must have studied how hydras move using their tentacles. They use their tentacles to sting and hunt other smaller invertebrates in an aquatic environment. They do not have eyes but have the capability of responding to light.
Human and chimp DNA is so similar because the two species are so closely related. Humans, chimps and bonobos descended from a single ancestor species that lived six or seven million years ago.
The sperm whale is technically the loudest animal in the world, but the answer is up for debate because how we perceive loudness is subjective. Do you measure the loudest animal by the decibels they register or by the impact of the sound itself? The dispute comes down to two animals: the blue whale and the sperm whale.