THEY DO indeed. They also have patellas, or kneecaps. It's just that we can't see them for the feathers.
That Penguin Waddle
But yes, penguins do have knees! A penguin's leg is composed of a short femur, knee, tibia and fibula. The upper leg bones are not visible as they are covered in feathers giving penguins a very short legged appearance.
Well in short – yes, penguins do have knees (well that was pretty anti-climactic). A penguin's legs are built up of a femur, knee, tibia and fibula, just like yours. Their legs may appear short and stubby, but don't be deceived, most of them are concealed by feathers.
Penguin knees are tucked up inside their body
Having short legs with webbed feet to act like rudders, helps to give them that torpedo-like figure.
Even though they look nothing like people or commonly encountered animals such as dogs and cats, penguins have similar skeletons and joints. They even have knees and elbows, but only about half as many bones: a human skeleton is made up of 206 bones, while a penguin has just 112.
Like all birds, penguins have a cloaca, which is a combined intestinal, urinary and reproductive tract. The male has internal testes (oval, grey), with the larger left one seen here. Sperm is deposited in the female's cloaca.
Birds don't have nipples, as they are not mammals.
In the early 20th century, before its evolution into a compliment, people used the phrase 'the bee's knees' to describe something that doesn't exist — and they were right. So, while bees don't have the same knees we do, they still have a joint between their tibia and femur that allows them some flexibility.
They have a bill and a tongue, but no teeth. First of all, penguins have a beak, with a pointy end to help them to grab their food, typically fish. The other outstanding feature of their mouth is the spikes on their tongues and the rooves of their mouths, that look like stalagmites and stalactites in a cave.
Flamingo legs actually bend just like human legs. What looks like a flamingo's knee is really its ankle joint. A flamingo's knees are located higher up the legs, hidden by the body and feathers.
They can sleep either lying down or standing up on the rocks and sometimes when they are standing up they will tuck the beak under the wings.
Elephants are the only animal to have four forward-facing knees. All other four-legged animals have at least one pair of legs with knees that face backwards.
A penguin's tongue, though lacking taste buds, has large keratinized bristles that help grip the krill or fish as it enters the mouth.
Why the ostrich is the only living animal with four kneecaps.
In animals
In more primitive tetrapods, including living amphibians and most reptiles (except some Lepidosaurs), the muscle tendons from the upper leg are attached directly to the tibia, and a patella is not present.
Their front leg joints bend backwards, like the wrists of humans, which is the opposite of most other four-legged mammals. Their back legs are slightly longer than the front, but their high shoulders make the front limbs look longer. The back legs have knees with kneecaps.
It comes out their nose in super salty tears! So, penguins do sort of cry, but from their nose not their eyes.
It's a known fact that all avian species are primarily uricotelic. In simpler means, organisms that excrete nitrogenous waste in uric acid form from their bloodstream. This excreted uric acid is a semi-solid mass. Unlike mammals, birds cannot release urea or ammonia; nor do they have a urinary bladder.
Summary: Although flightless in air, penguins have a number of adaptations which allow them glide effortlessly through the water. And some of these adaptations are in an unlikely part of their anatomy -- their brains.
The most common fact to know is that spiders have 8 legs while insects have 6 and also, spiders have 48 knees- 6 knees on each leg. Spiders don't have antennae while insects do.
The tibia of each leg has a subgenual ( under the knee ) organ, which detects and amplifies small vibrations. This alerts butterflies to ground vibrations caused by the approach of animals or birds, enabling them to respond instantly to danger.
Cat's elbow and knee joints are located further up on their limbs than human limbs. Felines have a elbow-like hinge joint on each front limb and a condylar knee-like joint on each back limb. This means that a cat has two elbows and two knees.
She found that males had slightly thicker beaks — measured from top to bottom — compared to females. Using beak size alone, Cappello could correctly determine the sex of more than 95 percent of their study penguins.
In the little blue penguin's lifecycle, the gametes multiply by meiosis inside an individual adult. There are two types of gametes, eggs which are made in a female adult and sperm which are made in the male adult. In the little blue penguins case the sperm are motile and the egg is immotile.
January 29, 2016. If there's one thing that emperor penguins excel at, it's cuddling. There's only one way to endure the frigid blizzards of the Antarctic, and that's by huddling together. On its own, the penguin huddle is heartwarming – but add baby penguins into the mix, and it's game over.