American Toad (Anaxyrus americanus)
Order Anura, Family Bufonidae, Genus Anaxyrus. Known for lacking teeth and having prominent parotoid glands.
Species
American Toad (Anaxyrus americanus)
Family
Order Anura, Family Bufonidae, Genus Anaxyrus. Known for lacking teeth and having prominent parotoid glands.
Size
Adult SVL ranges from 5 to 9 cm (2 to 3.5 inches). Females are generally larger than males.
Conservation
IUCN Status: Least Concern. Population is stable, though vulnerable to local habitat loss and pollution.
Description
A classic backyard amphibian characterized by its dry, bumpy skin and musical spring chorus. It is an essential gardener's ally due to its appetite for pests.
Key Features
Parotoid glands behind eyes, 1-2 warts per dark dorsal spot, and musical trilling call.
Physical Description
Robust, squat body with a rounded snout. It features short limbs, gold-flecked eyes with horizontal pupils, and prominent cranial crests on the head.
Skin Texture & Coloration
Highly tuberculate or 'warty' skin. Coloration is typically brown, gray, or olive with dark spots. Each dark spot on the back usually contains only one or two large warts.
Distinguishing Features
Cranial crests are usually either not touching the parotoid glands or connected only by a short spur; dark spots on the back contain only 1-2 warts.
Habitat
Highly adaptable, found in forests, grasslands, gardens, and backyards. Requires semi-permanent ponds or shallow pools for breeding.
Geographic Range
Common throughout eastern North America, from eastern Canada south to the Gulf Coast States and west to the Great Plains.
Behavior
Primarily nocturnal. They are terrestrial and move with short hops. When threatened, they often remain still or inflate their bodies to appear larger.
Diet & Feeding
Generalist carnivore eating insects, spiders, slugs, and earthworms. They use a 'sit-and-wait' strategy and catch prey with a sticky tongue.
Reproduction
Explosive breeders in spring. Males produce long trills to attract females. Eggs are laid in long, gelatinous strings in shallow water.
Vocalizations
A high-pitched, musical trill lasting 6 to 30 seconds. Each male has a unique pitch.
Life Cycle
Eggs hatch into small black tadpoles in 3-12 days. Metadata to toadlets occurs in 1-2 months. Sexual maturity is reached in 2-3 years.
Conservation Status
IUCN Status: Least Concern. Population is stable, though vulnerable to local habitat loss and pollution.
Toxicity & Defense
Parotoid glands secrete bufotoxins (milky alkaloids) that can irritate mucous membranes and are toxic to most small mammalian predators.
Ecological Role
Secondary consumer that controls invertebrate populations and serves as food for snakes (like the Eastern Hog-nosed Snake) and birds.
Similar Species
Fowler's Toad (Anaxyrus fowleri), which has 3 or more warts per dark spot and parotoid glands that touch the cranial crests.
Observation Tips
Best found on warm, humid nights in garden beds or near porch lights where insects congregate. Listen for trills near water in April/May.
Handling & Safety
Safe for humans to touch but wash hands afterward to avoid bufotoxin irritation. Do not touch eyes or mouth after handling. Always use wet hands.
Seasonal Activity
Active from early spring to leaf fall. They hibernate underground during winter below the frost line.
Cultural Significance
Often featured in folklore as a companion to witches or a symbol of hidden inner beauty (The Frog Prince).
Interesting Facts
They can live up to 10 years or more in the wild; they 'drink' water through a permeable patch of skin on their belly called a 'seat patch'.