The sperm whale (Physeter macrocephalus), or cachalot, is the largest of the toothed whales and the largest toothed predator. It is the only living member of genus Physeter, and one of three extant species in the sperm whale family, along with the pygmy sperm whale and dwarf sperm whale of the genus Kogia. Mature males average 16 metres (52 ft) in length but some may reach 20.5 metres (67 ft), with the head representing up to one-third of the animal's length.
The sperm whale is a pelagic mammal with a worldwide range, and will migrate seasonally for feeding and breeding. Females and young males live together in groups while mature males live solitary lives outside of the mating season. The females cooperate to protect and nurse their young. Females give birth every four to twenty years, and care for the calves for more than a decade. A mature sperm whale has few natural predators, although calves and weakened adults are sometimes killed by pods of orcas.
The sperm whale is the largest toothed whale, with adult males measuring up to 20.5 metres (67 ft) long and weighing up to 57,000 kilograms (56 long tons; 63 short tons). By contrast, the second largest toothed whale (Baird's Beaked Whale) measures 12.8 metres (42 ft) and weighs up to 15 short tons (14,000 kg).
Average sizes Length and Weight
Male 16 metres (52 ft) 41,000 kilograms (45 short tons)
Female 11 metres (36 ft) 14,000 kilograms (15 short tons)
Newborn 4 metres (13 ft) 1,000 kilograms (1.1 short tons)

credits to @mike_korostelev @mike_korostelev @hidrobiology21 and @koba_tan_oga

Is it correct to say Peregrine Falcon is fastest species on earth?

According the researcher, Peregrine Falcon is fastest of all species, BUT is it correct? Technically she gain this top speed 320 KM/hr when she fall free not by just flying straight, so is it correct to say that a diving bird (or free falling under gravity) can be considered the fastest species with its own ability ?

What if we consider only straight run/fly/swim ? Which one will top it ?

In general the Wild Boars, Warthogs and other member of this family are grass eating, but they also have been filmed eating meat of dead animals hunted by other carnivora. What is the main reason for this behaviour?

Hello everyone, I decided to make this topic dedicated to museum photos of dinosaurs and their fossils.

I went to the Manitoba Dinosaur Museum recently and I thought I would post some of the pictures.

*This is a picture of me next to Allosaurus 




*Reproduction of a Hadrosaur (Saurolophus?)




*Skeleton of Tyrannosaurus




*Reproduction of Tyrannosaurus




*Reproduction of velociraptor




*Big sauropod reproductions (One of these is Brachiosaurus)




*Very large Pterosaur with Tyrannosaurus (This looks like Anhanguera but it is too big, probably another species) Tropeognathus?





*This is a picture of Dilophosaurus





*This is a picture of the skeleton of Dilophosaurus fighting against unknown dinosaur (I think this is Plateosaurus?)





*Another view of Dilophosaurus and Plateosaurus

Gars are easily distinguished from other freshwater species by their long, slender, cylindrical bodies, long snouts, and diamond-shaped interlocking (ganoid) scales. The tail fin is rounded. Dorsal and anal fins are placed well back on the body and nearly opposite each other. Alligator gar is the largest of the gar species. It can grow over 8 feet long and weigh more than 300 pounds. Adults have two rows of large teeth on either side of the upper jaw. Coloration is generally brown or olive above and lighter underneath. The species name spatula is Latin for "spoon", referring to the creature's broad snout.
Several scientific reports suggest that an alligator gar can grow up to 10 ft (3.0 m) in length and weigh as much as 300 lb (140 kg); however in 2011 the largest alligator gar ever caught and officially recorded was 8 ft 5 1⁄4 in (2.572 m) long, weighed 327 lb (148 kg), and was 47 in (120 cm) around the girth.
Alligator gar are relatively passive, seemingly sluggish solitary fish, but voracious ambush predators. They are opportunistic night predators and are primarily piscivores, but they will also ambush and eat water fowl and small mammals that may be floating on the surface. Their method of ambush is to float a few feet below the surface, and wait for unsuspecting prey to swim within reach. They lunge forward, and with a sweeping motion grab their prey, impaling it on their double rows of sharp teeth.
Credits to @fishing.love.insta @reelmonsters @strippindippintaxidermy and @10one_phantom

Navicula - Harimau

This song made by Indonesian Rock Band Navicula, and tells the story of the Sumatran Tiger life in the edge of extinction,
I hope you guys as a big cat lovers can enjoy the song and video!

*Harimau means Tiger in Indonesian language

Smilodon populator was among the largest known felids, with a body mass of 400 kg (880 lb), and one estimate suggesting up to 470 kg (1,040 lb). It stood at a shoulder height of 120 cm (47 in) and had a body length excluding the tail of 220 cm. Compared to S. fatalis, S. populator was more robust and had a more elongated and narrow skull with a straighter upper profile, higher positioned nasal bones, a more vertical occiput, more massive metapodials and slightly longer forelimbs relative to hindlimbs. Large tracks from Argentina (for which the ichnotaxon name Smilodonichium has been proposed) have been attributed to S. populator, and measure 17.6 cm (6.9 in) by 19.2 cm (7.6 in). This is larger than tracks of the Bengal tiger, to which the footprints have been compared.
Despite being more powerfully built than other large cats, Smilodon had a weaker bite. Modern big cats have more pronounced zygomatic arches, while these were smaller in Smilodon, which restricted the thickness and therefore power of the temporalis muscles and thus reduced Smilodon's bite force. Analysis of its narrow jaws indicates that it could produce a bite only a third as strong as that of a lion. There seems to be a general rule that the saber-toothed cats with the largest canines had proportionally weaker bites. Analyses of canine bending strength (the ability of the canine teeth to resist bending forces without breaking) and bite forces indicate that the saber-toothed cats' teeth were stronger relative to the bite force than those of modern big cats. In addition, Smilodon's gape could have reached almost 120 degrees, while that of the modern lion reaches 65 degrees. This made the gape wide enough to allow Smilodon to grasp large prey despite the long canines.
Pictures taken from the book Sabertooth (Mauricio Anton)

Hydrocynus vittatus
The African tigerfish is overall silvery in colour, with thin black stripes running horizontally. It has an elongated body and a red, forked caudal fin with a black edge. Its head is large, as well as its teeth, of which there are eight per jaw. The teeth are sharp and conical which are used to grasp and chop prey. They are able to replace their teeth simultaneously on the upper and lower jaws. Males are larger and more full-bodied than females, Adult vittatus are normally 61 cm long (24 inches). It grows up to a length of 105 centimetres (41 in) SL the world record vittatus was a little over 35 pounnds (16 kg)
This species' distribution covers the Niger/Bénoué, Ouémé River, Senegal River, Nile, Omo River, Congo River, Lufira, Lualaba River, Luapula, Zambezi, Limpopo River, Rovuma, Shire River and Wami River; as well as Lakes - Lake Bangweulu, Mweru, Tanganyika, Upemba, Rukwa and Malagarazi. It is also found in the Okavango Basin and lower reaches of coastal systems south to the Pongola River and in man-made Lake Kariba, Lake Jozini and Schroda Dam.
These fish are fierce hunters and are mostly piscivorous and tend to eat whatever fish is most available. Smaller fish will hunt in large schools while larger African tigerfish hunt alone. Favoured prey fish include cichlids, Gobiidae, Cyprinidae, and Clariidae. Insects and zooplankton may also be part of the African tigerfish’s diet, especially during juvenile stages of life.
credits to @dick_flyrod @afrigadventures @caught_n_released and @barotsetigercamp_anglezambia

Thylacosmilus is an extinct genus of saber-toothed metatherian that inhabited South America from the Late Miocene to Piacenzian epochs.[1] Remains of this animal have been found primarily in Catamarca, Entre Ríos, and La Pampa Provinces in northern Argentina.
Thylacosmilus had large, saber-like canines. The roots of these canines grew throughout the animal's life, growing in an arc up the maxilla and above the orbits. Its cervical vertebrae were very strong and to some extent resembled the vertebrae of Machairodontinae.
Body mass estimates of Thylacosmilus suggest this animal weighed between 80 to 120 kilograms (180 to 260 lb), and one estimate suggesting up to 150 kg (330 lb), about the same size as a modern jaguar. This would make it one of the largest known carnivorous metatherians.
Skeleton and reconstructed life appearance of the marsupial sabertooth Thylacosmilus atrox the bones shown in blue are unknown and have been reconstructed on the basis of other borhyaenoid marsupials.
Shoulder height: 60 cm. Book Sabertooth (Mauricio Anton)

"Pit Vipers" is a common name to refer to the subfamily Crotalinae, that count 18 genera and more than 150 species. Seven of this genera is present in Asia:

Calloselasma (1 species)
- Calloselasma rhodostoma

Deinagkistrodon (1 species) 
-Deinagkistrodon acutus

Gloydius (10 species): 
-Gloydius blomhoffii
-Gloydius halys
-Gloydius himalayanus
-Gloydius intermedius
-Gloydius monticola
-Gloydius saxatilis
-Gloydius shedaoensis
-Gloydius strauchi
-Gloydius tsushimaensis
-Gloydius ussuriensis

Hypnale (3 species)
-Hypnale hypnale 
-Hypnale nepa
-Hypnale zara

Ovophis (3 species)
-Ovophis chaseni
-Ovophis monticola
-Ovophis okinavensis

Trimeresurus (47 species)
-Trimeresurus albolabris
-Trimeresurus andersoni
-Trimeresurus barati
-Trimeresurus borneensis
-Trimeresurus brongersmai
-Trimeresurus cantori
-Trimeresurus cornutus
-Trimeresurus elegans
-Trimeresurus erythrurus
-Trimeresurus fasciatus
-Trimeresurus flavomaculatus
-Trimeresurus flavoviridis
-Trimeresurus fucatus
-Trimeresurus gracilis
-Trimeresurus gramineus
-Trimeresurus hageni
-Trimeresurus insularis
-Trimeresurus jerdonii
-Trimeresurus kanburiensis
-Trimeresurus karanshahi
-Trimeresurus kaulbacki
-Trimeresurus labialis
-Trimeresurus macrolepis
-Trimeresurus macrops
-Trimeresurus malabaricus ✓
-Trimeresurus malcomi
-Trimeresurus mangshanensis
-Trimeresurus medoensis
-Trimeresurus monticola
-Trimeresurus mucrosquamatus
-Trimeresurus mutabilis
-Trimeresurus nebularis
-Trimeresurus popeorum
-Trimeresurus puniceus
-Trimeresurus purpureomaculatus
-Trimeresurus sabahi
-Trimeresurus schultzei
-Trimeresurus stejnegeri 
-Trimeresurus strigatus
-Trimeresurus sumatranus
-Trimeresurus tibetanus
-Trimeresurus tokarensis
-Trimeresurus trigonocephalus
-Trimeresurus truongsonoensis
-Trimeresurus venustus
-Trimeresurus wiroti
-Trimeresurus xiangchengensis

Tropidolaemus (4 species)
-Tropidolaemus huttoni 
-Tropidolaemus laticinctus
-Tropidolaemus subannulatus ✓
-Tropidolaemus wagleri

Share photos, videos, data and all information about these vipers (is important to add the name of the species).

*Many species are absent, so i add and update the species list when i found them.