The way that we live on Earth is causing an unprecedented acceleration in species extinction. Now, more than half a million species “have insufficient habitat for long-term survival” and are likely to go extinct unless their natural environments are restored. But we are already seeing major problems from this intrusion, not least through an increase in human-animal conflict.Continue reading Tragic tale of a ‘man-eating’ tigress tells us so much about the climate crisis
The Lion (Panthera leo) is the second largest cat in the world, after the tiger. The lion and tiger are closely related and they share a very similar body type. As its scientific name suggests, Lion is one of the five members of the Panthera genus
The tiger (Panthera tigris) is probably one of the most exotic and beautiful animals in the world. It is one of the five species classified in the genus Panthera, others being the lion, leopard, jaguar, and snow leopard Notes 1. Here are twenty amazing tiger facts.
If you search for the fastest land animals on the Internet, you will find many “fastest animals” lists, most of them are popular “top list” sites. But, in fact, there is a tendency to overestimate the speed of fast animals. Even the speed of the world’s fastest land animal, cheetah’s speed is usually highly overestimated
Continue reading The fastest land animals
After the extinction of the dinosaurs, approximately 66 million years ago, the rise of mammals begun. There were mammals on earth before that date, but after the Cretaceous–Paleogene (K–Pg) extinction event (a mass extinction of some three-quarters of the plant and animal species on Earth, including all non-avian dinosaurs), mammals took over the medium- to large-sized ecological niches. Some of these mammals reached enormous sizes, and usually, they were larger than today’s counterparts (with the exception of whales). Here are some of the largest prehistoric mammals ever known.
Bite force is an important property of carnivore ecology because these amazing animals need to kill their prey as easily as possible, and the bite force is a vital factor in this context. Here are the top 22 most powerful bites in carnivore land mammals.
The values below are average bite forces at the canine tips
Like all prehistoric counterparts of today’s animals, the prehistoric cats were usually larger, heavier and more robust than today’s felines. Here are the top five largest prehistoric cats.
For a comparison, male African Lions sometimes exceed 250 kg (550 lb) in weight. Reported body measurements in males are head-body lengths ranging from 170 to 250 cm (5 ft 7 inches to 8 ft 2 inches), tail lengths of 90–105 cm (2 ft 11 in–3 ft 5 in). Male Siberian (Amur) tigers have a head and body length of between 190–230 cm (75–91 in) and weigh between 180 to 306 kg (397 to 675 lb).
Four of the five species of the big cats (the Panthera genus – lion, tiger, leopard, jaguar and snow leopard), the exception being the snow leopard can hybridize with each other to produce numerous hybrids. In fact, breeding of two different
For instance, the liger’s increased growth rate and enormous size can cause the tigress giving birth to have a difficult delivery, endangering both the mother and her
Moreover, male ligers have lowered testosterone levels and sperm counts, rendering them infertile while females, though capable of reproducing with either a lion or a tiger, often give birth to sickly cubs that don’t survive.
However, hybrids do occur by accident in captivity.
Most hybrids would not survive in the wild due to the males being infertile, but a few (such as the Leopon – leopard father, lion mother) are fertile and have a chance of survival in the wild.
Ligers are the largest cats on Earth. A liger can be more than 900 pounds (~408 kg) in weight and 12 feet (~3.65 m) long, weighing almost 100 times more than house cats and almost twice as much as either Panthera tigris (tiger) or Panthera leo (lion).
The liger, the largest of all known extant felines, is a hybrid cross between a male lion and a female tiger.Continue reading World’s Largest Living Cat: Hercules, the liger (video)