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 The American toad (Anaxyrus americanus) is a common species of toad found throughout Canada and the eastern United States. It is divided into three subspecies: the eastern American toad (A. a. americanus), the dwarf American toad (A. a. charlesmithi) and the rare Hudson Bay toad (A. a. copei). Recent taxonomic treatments place this species in the genus Anaxyrus instead of Bufo.

American Toad Classification and Evolution

The American toad (Anaxyrus americanus) belongs to the family Bufonidae, which includes over 500 species of toads found all over the world. Bufonidae is one of the largest families of amphibians, and is known for its distinctive warty skin and large, poison-secreting glands behind the eyes.
The American toad was formerly classified as Bufo americanus, but in 2006, genetic studies showed that the genus Bufo was not monophyletic (meaning that it did not contain all descendants of a common ancestor) and was in need of revision. As a result, the American toad was moved to the genus Anaxyrus, which also includes other North American toad species such as the woodhouse's toad (Anaxyrus woodhousii) and the Canadian toad (Anaxyrus hemiophrys).
The evolutionary history of the American toad and other Bufonidae species can be traced back over 70 million years to the Late Cretaceous period. Fossils of early toad species have been found in various parts of the world, and show that these animals had already developed many of the characteristic features of modern toads, such as a squat, chunky body shape and warty skin.
Over time, toads have adapted to a wide range of environments, from rainforests to deserts. The American toad, for example, is found throughout much of North America, from Canada to Mexico, and has evolved to survive in a variety of habitats, including forests, grasslands, and urban areas. Despite the challenges posed by habitat loss, pollution, and disease, the American toad remains a common and well-known species, and is an important part of many ecosystems.

American Toad Anatomy and Appearance

The American toad (Anaxyrus americanus) is a species of toad native to North America. Here are some of the key features of their anatomy and appearance:

• Size: American toads are medium-sized, typically growing to between 2 and 4 inches (5-10 cm) in length.
• Skin: Their skin is rough and bumpy, with raised warts or glands called parotoid glands on the sides of their head, behind the eyes. These glands secrete a toxic substance that helps protect the toad from predators.
• Coloration: American toads have brown, gray, or greenish-brown skin with various patterns of lighter and darker spots or blotches. Their belly is usually lighter in color than their back.
• Eyes: Their eyes are large and gold or copper-colored with horizontal pupils.
• Limbs: They have four short legs with webbed toes, which they use for hopping or walking.
• Ears: American toads have round eardrums (tympana) located behind their eyes.
• Nose: They have a slightly upturned snout with nostrils at the end.
• Mouth: Their mouth is wide and filled with small, pointed teeth.

Overall, the American toad is a fairly common species that can be easily recognized by its rough, bumpy skin and distinctive coloration.

American Toad Distribution and Habitat

The American toad (Anaxyrus americanus) is found throughout much of North America, from Canada to Mexico. It is a highly adaptable species and can thrive in a variety of habitats, including:

• Woodlands: American toads can be found in deciduous forests, coniferous forests, and mixed forests. They prefer areas with moist soil and plenty of leaf litter for cover.
• Fields and meadows: They are also found in grasslands, pastures, and meadows, where they use the cover of vegetation to hide from predators.
• Wetlands: American toads are commonly found in wetlands such as marshes, swamps, and bogs. They are able to tolerate temporary inundation and can breed in these habitats.
• Suburban and urban areas: Due to their adaptability, American toads can also be found in suburban and urban areas, including parks, gardens, and golf courses.

Overall, the American toad is a widespread and adaptable species that can be found in a variety of habitats throughout much of North America.

American Toad Behaviour and Lifestyle

The American toad (Anaxyrus americanus) is a nocturnal species, meaning that it is most active at night. During the day, they can often be found hiding under rocks, logs, or in burrows to avoid predators and stay cool. Here are some other aspects of their behavior and lifestyle:

• Diet: American toads are carnivorous and feed on a variety of insects, spiders, worms, and other small invertebrates. They use their sticky tongue to catch their prey, which they swallow whole.

• Reproduction: American toads breed in the spring and early summer, usually in shallow water such as ponds, swamps, or slow-moving streams. The males will call to attract females, and after mating, the females will lay strings of eggs in the water. The eggs hatch into tadpoles, which undergo metamorphosis into juvenile toads.

• Defense mechanisms: American toads have several defense mechanisms to protect themselves from predators. They can inflate their bodies to make themselves look bigger, and they have parotid glands on their skin that secrete a toxic substance to deter predators.

• Hibernation: During the winter, American toads will hibernate in burrows or other underground shelters to survive the cold temperatures.

• Vocalizations: Male American toads produce a loud, high-pitched trilling call to attract females during the breeding season. They can also produce a shorter, less intense call as a warning signal to other males.

Overall, the American toad is a solitary and nocturnal species that is well-adapted to its environment, using a variety of strategies to survive and reproduce.

American Toad Reproduction and Life Cycles

The American toad (Anaxyrus americanus) is a nocturnal species, meaning that it is most active at night. During the day, they can often be found hiding under rocks, logs, or in burrows to avoid predators and stay cool. Here are some other aspects of their behavior and lifestyle:

• Diet: American toads are carnivorous and feed on a variety of insects, spiders, worms, and other small invertebrates. They use their sticky tongue to catch their prey, which they swallow whole.
• Reproduction: American toads breed in the spring and early summer, usually in shallow water such as ponds, swamps, or slow-moving streams. The males will call to attract females, and after mating, the females will lay strings of eggs in the water. The eggs hatch into tadpoles, which undergo metamorphosis into juvenile toads.
• Defense mechanisms: American toads have several defense mechanisms to protect themselves from predators. They can inflate their bodies to make themselves look bigger, and they have parotoid glands on their skin that secrete a toxic substance to deter predators.
• Hibernation: During the winter, American toads will hibernate in burrows or other underground shelters to survive the cold temperatures.
• Vocalizations: Male American toads produce a loud, high-pitched trilling call to attract females during the breeding season. They can also produce a shorter, less intense call as a warning signal to other males.

Overall, the American toad is a solitary and nocturnal species that is well-adapted to its environment, using a variety of strategies to survive and reproduce.

American Toad Diet and Prey

The American toad (Anaxyrus americanus) is an insectivorous amphibian that feeds on a variety of invertebrates. Its diet primarily consists of insects, such as beetles, ants, flies, caterpillars, and spiders, but it may also consume small vertebrates, including other amphibians and even small mammals.

American toads have a unique feeding mechanism called "lingual prehension," which involves flipping their long, sticky tongue forward to capture prey. They do not have teeth but instead use their powerful jaw muscles to crush and swallow their food whole.

In the wild, American toads can be found foraging on the ground and in low vegetation, often at night when their prey is most active. They are opportunistic feeders and will consume whatever prey is available to them. In captivity, they can be fed a diet of crickets, mealworms, and other small insects.