Rooster Crowing in the Morning

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Amanda Rose Newton, Board Certified Entomologist

Amanda Rose Newton is a pest specialist, reviewing pest control content for The Spruce's Cleaning Review Board. She is a board-certified entomologist and volunteers for USAIDs Farmer to Farmer program. Currently, she is a professor of Horticulture, an Education Specialist, and pest specialist.She has a decade's worth of experience in both the academic and professional sides of horticulture and entomology. Her focus is on educating gardeners to use sustainable practices that will lead to improved food security and quality for the next generation.

Giant Chinese Salamander (Andrias davidianus)

The giant Chinese salamander is a critically endangered salamander species. It is the world’s largest amphibian. Chinese salamanders have an average length of 1 meter and weigh 11 kg. Their bodies are heavily built and flat, with short but sturdy limbs.

They can live for up to 60 years. The conservation status of giant Chinese salamanders is critically endangered. Researchers could only find 24 giant Chinese salamanders in the wild. Excessive hunting by humans caused an alarming decline in their population.

Chinese Giant Salamander (Andrias davidianus)

The Chinese Giant Salamander is the world's largest amphibian, found in the streams and lakes of China. It can stretch up to almost 6 feet in length, second only to the largest amphibian which is discussed in the next section. 

They are active at night and feed on insects, frogs, crabs, and fish. Sometimes, they resort to cannibalism. Since they have poor eyesight, they have a built-in vibrational sensor called the lateral line system that helps them locate prey and avoid danger. 

Interestingly, they make sounds resembling a baby crying, so locals in China call them "baby fish.” Despite this endearing name and their huge size, Chinese Giant Salamanders have the IUCN Critically Endangered status due to habitat destruction and overhunting7.

Japanese Giant Salamander (Andrias japonicus)

The Japanese Giant Salamander lives in Japan's mountainous landscapes. Its crinkled and coarse skin helps it blend in with the rocks in its watery habitat. Like other salamanders in the Andrias genus, it is large, reaching up to 5 feet.

These types of salamanders are nocturnal creatures that rely on their sense of smell and touch to hunt for fish, insects, worms, and small mammals. During the breeding season, males become aggressive and fiercely guard their nesting sites, which can hold up to 500 eggs.

Persian Mountain Salamander (Paradactylodon persicus)

The Persian Mountain Salamander inhabits the temperate rainforests at the southwestern rim of Iran's Caspian Sea. It has a rectangular head and rounded tail, typically longer than the rest of its body.

These Asiatic salamanders sport a dark hue speckled with irregular yellow spots. These salamanders present carnivorous traits throughout their lives, feasting on arthropods and other small animals within their shared environment.

Tiger Salamander (Ambystoma tigrinum)

Tiger Salamanders are mole salamanders that can reach up to 14 inches long. It has dark skin with bright yellow or olive-colored blotches and is found in various habitats across North America.

Native tiger salamanders are reported in the northern and eastern U.S. and are regarded as relict populations. Conversely, the west coast hosts non-native species, resulting from using larval salamanders as fishing bait4, causing hybridization.

They spend their days concealed in burrows, under rocks or logs, emerging only at night. Their diet includes invertebrates such as worms, insects, slugs, and sometimes even small mammals, reptiles, or amphibians. 

During the spring mating season, males deposit a spermatophore on the ground, which females use to fertilize their eggs. Most salamander species use this reproductive method. Afterward, the fertilized eggs attach to vegetation in shallow bodies of water, and the larvae transform into terrestrial adults over the next few months.

Spotted Salamander (Ambystoma maculatum)

The Spotted Salamander, also called Yellow-spotted Salamander, lives in the forests of eastern North America. Their yellow or orange spots warn predators of their toxicity and help them blend in with the forest floor. 

Moreover, they are active at night, eating insects and other invertebrates, which helps keep pest populations in check. They mostly live underground and will come out to eat or breed.

Marbled Salamander (Ambystoma opacum)

The Marbled Salamander is a visually appealing species inhabiting the deciduous forests in the eastern United States. This species demonstrates sexual dimorphism - females typically showcase light grey bands, while males present strikingly white ones.

They live near bodies of water, frequently burrowing under rocks or logs. When threatened, they curl their tails to expose their bright underside, secreting a mild toxin. Other defense mechanisms include the coiling of bodies and the lashing of tails.

California Tiger Salamander (Ambystoma californiense)

The California Tiger Salamander is endemic to California's grasslands and vernal pools. It is one of the largest species in its family, growing to 7-8 inches. 

Since they are mole salamanders, they spend most of their lives in burrows and migrate to temporary pools during the rainy season to lay their eggs. The larvae remain underwater for a few months until they transform into land-dwelling adults. 

Their diet consists of small invertebrates, and they have a unique defense mechanism when threatened. They also regulate the insect population in their ecosystem.

Pacific Giant Salamander (Dicamptodon tenebrosus)

The Pacific Giant Salamander, a large species endemic to the Pacific Northwest in North America, can grow up to 13.4 inches. It typically has dark brown to black backs, adorned by light brown spots or marbling, and lighter underbellies.

This salamander prefers semi-aquatic habitats, favoring small-to-mid-sized streams and riverside forests.

Pacific Giant Salamanders get vocal if disturbed, emitting a distinct "bark." Adopting a defensive pose, it arches its body, thrashes its tail, and when the need arises, repels predators by secreting a noxious substance. Adults can also head-butt and bite.