The Carboniferous Period is often referred to as the "Golden Age of Sharks." These animals had branched off into many diverse and bizarre groups, becoming the oceans' top predators. 20 foot-long fish terrorized freshwater lakes, and soft-bodied creatures that looked like aliens were abundant too.
Creeping voles are interesting and unusual animals. The females have a single sex chromosome, which is an X one. The males have two X chromosomes and no Y one.
From the US Navy flying a squid across the Atlantic to a peaceful encounter between another and a diver, here are the best glimpses of giant squids.
The science of glowing organisms is an interesting subject. Here, I have shared a list of 11 beautiful organisms that can glow.
Polychaete worms are related to earthworms and share some of their features. Two strange species have highly branched bodies and live inside sponges.
Researchers have recently sequenced part of the genome of the extinct dire wolf. The animal was once common and was about twenty percent larger than the gray wolf.
Unlike other primates, the fat-tailed dwarf lemur hibernates in winter. Studying this behaviour might be useful for enabling long-distance space travel in humans.
This educational article introduces young people to the biology of amphibians. It describes the differences between frogs, toads, salamanders, newts, and others and explains the amphibian life cycle in clear, easy-to-understand language.
Caecilians are interesting animals that often appear to be earthworms or snakes. They are actually amphibians. They are poisonous and may be venomous as well.
This article examines the top 10 deadliest (and most dangerous) cobra species in the world. It provides a direct analysis of each snake's behavioral pattern, level of aggression, and venom toxicity (in relation to humans and animals).
Here are pictures and facts to help you identify woodpeckers in Pennsylvania and the northeastern parts of the United States. Learn about woodpecker migration, behavior, and more.
The family Saturniidae contains some colorful, vividly patterned, and large moths. Both the adults and their caterpillars are interesting to observe and study.
Goats have horizontally oriented, oval-shaped pupils which become more rectangular in bright light. They have wide-angled vision with a range of 320-340 degrees. Their slit-like pupils limit distracting light from the vertical direction while enhancing horizontal focus.
The blood-sucking habit of the European medicinal leech (Hirudo medicinalis) can be very useful in medicine. Scientists have recently sequenced its genome.
Despite their common name, "fainting goats" do not actually faint at all. The condition with which these goats are affected is known as myotonia congenita. It is a hereditary muscle-stiffness disorder caused by a mutation in the gene encoding of chloride channels in skeletal muscle fibres.
Wolf spiders are great hunters. Some species live in the Arctic, where temperatures are increasing. Evidence suggests that this is affecting their population.
Nothing makes tourists whip out their cameras faster than seeing an unusual-looking animal on vacation. Getting up close and personal with furry friends we have yet to encounter is always a highlight. Here we present our list of 12 of the strangest-looking animals in the world.
Wolves are among the most fascinating creatures found in the wild. With their intricate communication, social hierarchy, and clever hunting strategies, they really stand out from other predatory species. Learn more about their lifestyle, diet, habitat, and conservation status here.
A quick and easy guide to help you identify gypsy moth caterpillars, a serious pest of oak and many other trees.
The rhinoceros hornbill and the horned guan are interesting birds whose populations are a concern. Both of them have a horn-like head ornament made of keratin.
Some frog species have beautiful colours. Blue and strawberry poison dart, golden poison, Malagasy rainbow, tomato, and emerald glass frogs are six examples.
Learn about the Downy Woodpecker’s habitat, nesting habits, food preferences and more, plus view pictures to help you identify it and find out how to attract it to your yard.
Slow lorises are the only venomous primates. A protein in their venom resembles an allergenic protein in cat dander and saliva. Their populations are in trouble.
This article explores the 10 most dangerous snakes in the United States and Canada. It analyzes each of the chosen snakes through an analysis of their venom toxicity, level of aggression, and overall threat to humans.
The aye-aye is a lemur with some bizarre features. Its thin and long third finger is used for tap foraging, and its hidden pseudothumb may act as a sixth digit.
The northwestern crow is an intelligent and interesting bird. Canuck is a wild but semi-tame crow who voluntarily associates with people in Vancouver. Sadly, he has disappeared.
Although there are few Gouldian finches in the wild, there are many being raised by individuals, and you can see them in many zoos. This article will introduce the reader to these beautiful birds.
The forest elephant is in trouble. The loss of the species could increase the carbon dioxide level in the atmosphere, which in turn could worsen climate change.
Mourning doves are backyard favorites in many places. Their mournful sound is actually very soothing. This article should explain all you need to know about these beautiful doves that are favorites of ours here in New Mexico.