Goldfish do not have a stomach. Since they are unable to accumulate food, they are constantly feeding.

They measure rectal temperature from the anus. We measure rectal temperature from the anus because the rectum is almost always in a closed state, is not easily affected by the outside world, and can maintain a constant body temperature.

Sanderia malayensis eat other jellyfish & small fish.

Of the 18 species of penguins in the world, only the gentoo penguin has yellow feet. Look at their feet.

The orca is said to be the fastest of all cetaceans at 55 km/h.