Animals

Sunday, 10 May 2026
15 facts about fleas
15 facts about fleas
External parasites
Fleas are one of the most hated insects by pet owners. Once they find their way onto a dog or a cat, they are very hard to remove. Reproducing at a ve ...

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Sea otter
The greatest threat to sea otters is human activity. Although it is illegal today, sea otters were once hunted in large numbers for their pelts. Massive fur hunting began in the 18th century.
The species was saved by the enforcement of a Treaty for the Preservation and Protection of Fur Seal ...
Salamanders
Reproduction and eggs
While salamanders lay their eggs without shells and deposit them in a moist environment, lizards typ ...
Zebra mussel
Following the mass introduction of zebra mussels in 1991 in Saginaw Bay of Lake Huron, changes were observed in the plant plankton communities and benthic fauna.
The amount of algae in the water body decreased by almost 60%, phosphorus concentration decreased by 42%, and water transparency increased significantly.
Corn snake
Young hatchlings are 25 to 38 centimeters long and reach maturity within the first three years of life.
Housefly
The metamorphosis of the pupa at 35 °C lasts from two to six days.
At 14 °C, metamorphosis may take more than twenty days. After hatching from the cocoon, the fly stops growing and reaches its maximum size. A housefly pupa weighs between 8 and 20 milligrams.
Alpaca
Alpacas are intelligent, they get used to their owners, learn quickly and adapt to new living conditions.
These animals are used for so-called alpaca therapy with healthy and handicapped children, as well a ...
Tiger sharks
Female tiger sharks mate once every three years.
Cane toad
Their primary sense is vision.
When hunting, they rely on motion detection but support themselves with their sense of smell.
Javan leopard
It is listed as endangered by the IUCN Red List.
It faces a fragmentation of its habitat and agricultural expansion.
Blue tang
When it is time to breed, males and females congregate.
The fertilization is external: males expel the sperm, and females the eggs.