Animals

Monday, 13 April 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 lamprey
Their skeleton is made of cartilage instead of bone.
Sea lampreys belong to the class of Chondrichthyes, which make up a minority of all living fish. Of the nearly 35,000 species of fish, there are about 1200 cartilaginous species only.
Hammerhead sharks
Their average lifespan ranges from 20 to 30 years.
Hummingbirds
In order to retain their properties, hummingbird feathers must be systematically soaked.
Llamas
Coat color
Alpacas have more uniform coloration while llamas are usualy more patchy.
American bullfrog
Females can lay up to 20,000 fertilized eggs, which hatch within the next four days.
The tadpoles remain in the pond for the next two years, then undergo metamorphosis in August or September.
Housefly
Flies have a liquid diet adapted mouthparts.
It is used to ingest liquids and the solid fraction previously dissolved with saliva.
Cane toad
They are native to the Americas, from Rio Grande Valley in southern Texas through Central America, Colombia, Venezuela, Amazonia up to southern parts of Peru.
They are also present on some islands near Venezuela like Margarita or Trinidad and Tobago.
Arabian oryx
Pregnancy of females lasts 240 days, a calf is born, which the mother nurses for 2.5 months.
Oryxes reach sexual maturity at the age of 2.5 to 3.5 years and live up to more than 20 years.
Aye-aye
Once it locates the chamber inside the tree, it chews a hole and extracts grubs using its narrow middle finger.
Otters
Depending on the species, otters can be both monogamous and polygynous.
Promiscuous behavior is, however, more common.