The mammals, birds, fish, and invertebrates that start with the letter J are jackals, hares, gerbils, roosters, and jaguars. The invertebrates include the Jerusalem cricket and the jumping spider.
Animals That Start With J – List of Animals that name Begins With the Letter ‘J’
You may learn about these and many other fascinating animals that begin with the letter J on this page, along with photographs and information on each animal.
There are links under many species that you can use to access additional details and images.
Jabiru
The Jabiru is a big, impressive-looking crane that belongs to the Ciconiidae family. It is primarily found in South America, ranging from middle Argentina to southern Colombia, as well as Central America and northern Mexico. In the US, it happens incredibly infrequently.
The jabiru is a long-legged, long-necked heron, like all herons. Be as tall as 5 feet. The jabiru, which is 1.52 meters tall, is the highest flying bird in South America, but Rhea, a non-flying bird, is slightly taller. The thrush is the tallest bird in North America.
Jabiru has white/light grey wings and a body. At the base of the neck, there is an intense crimson line. The head, beak, and remainder of the neck are all shades of black.
When hunting, the Jabiru holds its enormous beak in the water and waits for its victim to approach within striking distance. The jabiru is an opportunistic eater that consumes the majority of tiny animals in its route, including fish, mollusks, small reptiles, and insects.
Jacamar
The Galbulidae family of jackets consists of 18 different species. They are little, frequently vividly colored birds that live in Central and South American forests and woodlands.
Insectivores (insect workers), and jacamars are equipped with long, slender prey. Jacamars often hunt by waiting for their prey to approach while perched on a suitable perch.
The largest Jacamera species, measuring up to 30 cm long, is Jacamerops aureus. It resides in the South and Central American rainforests.
Jacana
Eight wading birds in the genus Jacanas collectively make up the family Jakanidae.
Jacana can walk on lilies and other floating plants thanks to its long legs and very long claws.
Because of their propensity to stroll on lilies, jacanas are referred to as “Jesus birds” (giving the observer the impression that they are walking on water).
Jack Russell Terrier
The Reverend John Russell created the Jack Russell Terrier dog breed in England around the beginning of the 19th century. Russell, a keen fox hunter, discovered that the breed’s little size and short legs allowed him to pursue foxes out of their caves.
Small dog breeds like Jack Russells can have smooth or rough coats. Its typical color is white with ethereal specks of brown or black.
Jackals
Jackals come in three different varieties: black-backed, side-striped, and golden. All are canine members of the Kanidae family.
Africa is home to closely related side-striped and black-backed jackals.
The larger of the two African jackals, the side-striped jackal, frequently dwells in woods.
Grasslands and savannas are examples of more open habitats that black-backed jackals frequently inhabit. It is an ancient dog breed, and modern examples resemble their Pleistocene predecessors just slightly.
Southeast Europe, the Middle East, and southern Asia are where you can find the golden jackal. The grey wolf is its closest relative, not the other two jackal species.
Jackrabbit
Rabbits are not, despite their name, rabbits. The genus Lepus includes rabbits (and hares). Lepus is a member of the family Leporidae, which also contains rabbits.
In North America, all seven species of rabbit can be found. The white-tailed hare is the biggest type of rabbit. More than any other yak, it has a wider range in the north.
Hares (sometimes known as hares) do not dig burrows as rabbits do. The young instead slumber and grow in shallow tunnels called burrows. Precocious animals that can move and eat soon after birth include rabbits and hares.
Jaeger
Three members of the squaw family Stercorariidae are referred to in North America as “jaeger” birds. The arctic or parasitic jaeger, the pomarin jaeger, and the long-tailed jaeger are the three types of jaegers. These birds are referred to as skunks outside of North America.
Large seabirds called jaegers are arctic-breeding species. The kleptoparasitic tendencies of Jaegers are well known. A kleptoparasite does not hunt its own prey; instead, it steals it from other animals. Ospreys rob other seabirds of their food.
The majority of the skuas’ diet, though they also capture their own food, consists of food obtained from other birds.
Jaguar
Only the tiger and the lion are bigger than the jaguar, which is the third largest cat in the Felidae family.
The jaguar is an apex predator that inhabits the woods of Central and South America (the top of the food chain). In Texas and other southern states, the jaguar is also (very) infrequently spotted.
The Jaguar is a member of the Panthera family of cats, like other cats. (Cheetahs and cougars, which are not members of the genus Panthera, are occasionally incorporated within the category of big cat.)
Numerous rosettes, or rings, are used to embellish the jaguar’s golden coat.
Smaller black dots are found on jaguar roses. (This sets the species apart from the leopard, whose rosettes do not have these additional spots.) Additionally, the Jaguar is made more sturdily than its Old World relative.)
Jaguarundi
Wild cats called jaguarundis are prevalent in much of South and Central America. This species has sporadically been spotted in Florida and other southern states as well. It inhabits a wide range of environments, including savannas and rainforests.
The Jakorund is rough twice as big as a domestic cat and has short, rounded ears and relatively short legs. Individuals of the species might have skin that is either golden red or grey, even if their siblings have a different color.
Japanese Macaque
Only located in Japan, the Japanese macaque inhabits many types of forests there.
The Japanese macaque, sometimes known as the “snow monkey,” is the only primate (apart from humans) that may be found farther north or in a colder climate. Its habitat is blanketed in snow for part of the year. Because they take hot spring baths in the park, the Japanese macaques that reside there have turned into popular tourist destinations.
Japanese Squirrel
The family of squirrels includes the Japanese squirrel. It lives in the Netherlands and on the Japanese islands of Honshu and Shikoku in subalpine (below tree line) pine forests. The species was also found on Awaji Island until recently.
One of the roughly 100 species classified as “tree squirrels” due to their predatory (tree-dwelling) habit is the Japanese squirrel.
Squirrels, who are frequently referred to as simply “squirrels,” are members of the Sciuridae family of squirrels, which also includes flying squirrels.
Javan Rhinoceros
One of the five rhinoceros species still in existence is the Javan rhinoceros. Just the Ujung Kulon National Park in Java is home to the Javan rhinoceros, which was once located not only on the island of Java but also on Sumatra and the mainland of Southeast Asia.
One of the rarest and most endangered big mammals, there are just about 70 Javan rhinos surviving in the wild.
One of two one-horned rhino species is the Javan rhinoceros; the other is its near relative, the Indian rhinoceros. The three other species of rhinoceros all have two horns.
Female Javan rhinos either lack horns totally or have little stumps; only the males have full horns.
The Javan rhinoceros’ thick skin contains deep folds that create the appearance of armor.
The main factor contributing to the Javan rhinoceros’ critically endangered status is overhunting, particularly for its horn, which is highly prized in traditional Chinese medicine.
Jay
The family of birds known as corvids includes jays. About 50 different species of jays exist. Jays are a group of birds that are scattered across multiple families in the crow family and are not all closely related to one another.
(The plural form of “family” is “families. A family is a division of an animal species. Species belonging to the same genus are more closely related to one another than to other species in the same genus.)
There are two recognized primary groups of jays: Old World jays (including the Eurasian jay, known simply as “beak”). New World jays; and Great Britain (including species such as Florida and California scrub jays and blue jays).
Jellyfish
Oceans around the world are home to jellyfish, which are invertebrates (animals without backbones).
The bell and the tentacles make up the majority of a jellyfish’s body. The bell moves the jellyfish through the water as it contracts and expands.
The needle cells of jellyfish tentacles are designed to emit poison. They are employed for both catching prey and defending against predators.
Some jellyfish, particularly those in the Cubozoa class, have lethal stings for humans. Many other jellyfish species have stings that are potent enough to give swimmers who are unlucky enough to come into contact with their tentacles severe pain.
