American Toad (Anaxyrus americanus)
Order Anura, Family Bufonidae, Genus Anaxyrus. This family is characterized by toothless jaws, warty skin, and prominent parotoid glands.
Species
American Toad (Anaxyrus americanus)
Family
Order Anura, Family Bufonidae, Genus Anaxyrus. This family is characterized by toothless jaws, warty skin, and prominent parotoid glands.
Size
Adult SVL ranges from 5 to 11 cm (2 to 4.5 inches). Females are generally larger than males. Metamorphs are very small, often less than 1 cm.
Conservation
IUCN Status: Least Concern. Population is stable, though local declines occur due to habitat fragmentation and pesticides.
Description
The quintessential 'garden toad,' this species is a rugged survivor. In its habitat, it resembles a small piece of lumpy earth, providing perfect camouflage among dead leaves. It is a gardener's friend, relentlessly patrolling for pests with its golden-flecked eyes.
Key Features
Prominent parotoid glands, cranial crests separate from glands, 1-2 warts per dorsal spot, and a dry, warty skin texture.
Physical Description
Robust and chunky body with a short, blunt snout. It features prominent cranial crests and large, kidney-shaped parotoid glands behind the eyes. The pupils are horizontal and the iris is typically gold or bronze.
Skin Texture & Coloration
Skin is dry and highly tuberculate (warty). Coloration varies from tan, brown, or olive to reddish. It has dark spots on the back, often containing only one or two large warts per spot. A light vertebral stripe may be present.
Distinguishing Features
Distinguished from the Fowlers Toad by having only 1 or 2 warts per dark dorsal spot and having parotoid glands that are separate from the cranial crests or connected by a short spur.
Habitat
Extremely versatile; found in forests, grasslands, gardens, and agricultural fields. Requires semi-permanent or ephemeral shallow water for breeding.
Geographic Range
Native to eastern North America, ranging from eastern Canada southward to the southeastern United States and westward to the eastern Great Plains.
Behavior
Primarily nocturnal, though active during the day in humid conditions. They are terrestrial hopping toads and will burrow into soil or leaf litter to avoid desiccation.
Diet & Feeding
Generalist carnivores that eat a vast array of invertebrates including beetles, snails, slugs, worms, and spiders using a flick-and-grab tongue movement.
Reproduction
Explosive breeders in spring. Males congregate in shallow water and produce high-pitched trills. Eggs are laid in long, gelatinous double strings tangled in vegetation.
Vocalizations
A long, musical high-pitched trill lasting 6 to 30 seconds. To a human, it sounds like a pleasant, vibrating whistle often heard in massive choruses near ponds.
Life Cycle
Eggs hatch in 3-12 days into small black tadpoles. Tadpoles metamorphose into toadlets in 5-10 weeks. They reach sexual maturity in 2-3 years and can live up to 10 years in the wild.
Conservation Status
IUCN Status: Least Concern. Population is stable, though local declines occur due to habitat fragmentation and pesticides.
Toxicity & Defense
Possesses parotoid glands that secrete bufotoxins when threatened. These chemicals are irritating to mucous membranes and can be dangerous if ingested by small pets.
Ecological Role
Functions as a high-level invertebrate predator that controls insect populations and serves as a vital food source for hognose snakes and various birds.
Similar Species
Fowlers Toad (Anaxyrus fowleri), which has 3 or more warts per spot and parotoid glands that touch the cranial crests.
Observation Tips
Best found on warm, rainy spring nights near shallow ponds or under porch lights where insects congregate in summer.
Handling & Safety
Safe to pick up with wet hands, but wash hands immediately after. Do not touch eyes or mouth after handling due to skin toxins. Safe for the toad if handled gently.
Seasonal Activity
Active from early spring to late autumn. They undergo brumation (hibernating underground below the frost line) during the winter months.
Cultural Significance
Often the subject of 'wart' myths (though they do not cause warts in humans). They represent fertility and rain in various North American indigenous cultures.
Interesting Facts
The American Toad can change its color slightly based on humidity and temperature. They are also known to eat their shed skin to reclaim nutrients.