American Toad (Anaxyrus americanus)
Order Anura, Family Bufonidae, Genus Anaxyrus, Species A. americanus. Bufonids are known as 'true toads', characterized by parotoid glands and dry, warty skin.
Species
American Toad (Anaxyrus americanus)
Family
Order Anura, Family Bufonidae, Genus Anaxyrus, Species A. americanus. Bufonids are known as 'true toads', characterized by parotoid glands and dry, warty skin.
Size
Adult SVL typically ranges from 5 to 10 cm (2 to 4 inches). Females are generally larger than males. Metamorphs are tiny, often less than 1 cm upon leaving the water.
Conservation
IUCN Status: Least Concern. Population is stable, though they face local threats from habitat loss, pesticide runoff, and road mortality during breeding migrations.
Description
A classic backyard visitor, the American Toad is a rugged survivor. In the low light of evening, its golden eyes and bumpy skin provide perfect camouflage among forest detritus. It is a symbol of the transition from late spring to summer.
Key Features
Dry warty skin, kidney-shaped parotoid glands, 1-2 warts per dorsal spot, and cranial crests separated from the parotoid glands.
Physical Description
A squat, robust amphibian with short legs. It features a blunt snout, large golden-to-bronze eyes with horizontal pupils, and prominent cranial crests. Large, kidney-shaped parotoid glands are located behind the eyes.
Skin Texture & Coloration
Skin is dry and highly warty. Color varies from brown and gray to olive or brick red. They usually have a light mid-dorsal stripe. Dark spots on the back typically contain only one or two large warts.
Distinguishing Features
The most reliable marker is that the parotoid gland is either separated from the cranial crest or connected only by a short spur. Additionally, dark spots on the back contain only 1–2 warts.
Habitat
Extremely versatile, found in forests, grasslands, and suburban gardens. They require semi-permanent freshwater ponds or shallow pools for breeding but are otherwise terrestrial.
Geographic Range
Native to Eastern North America, ranging from central Canada south to Mexico, and from the Atlantic coast west to the eastern edge of the Great Plains.
Behavior
Primarily nocturnal and crepuscular. They are terrestrial hoppers that use their strong hind legs for short jumps. They spend days hiding under logs, rocks, or in leaf litter.
Diet & Feeding
Generalist insectivores. They use a sit-and-wait strategy to ambush beetles, ants, spiders, slugs, and earthworms, catching them with a flick of their sticky tongue.
Reproduction
Explosive breeders in spring (March–June). Males congregate in shallow water to call. Amplexus is axillary. Eggs are laid in long, gelatinous double strings tangled in vegetation.
Vocalizations
A long, high-pitched musical trill lasting 6 to 30 seconds. It has been described as a 'dreamy' sound that carries a long distance over water.
Life Cycle
Eggs hatch in 3–12 days; tadpoles are small and black. Metamorphosis occurs in 40–70 days. Juveniles reach sexual maturity in 2–3 years. Wild lifespan is often 1–5 years.
Conservation Status
IUCN Status: Least Concern. Population is stable, though they face local threats from habitat loss, pesticide runoff, and road mortality during breeding migrations.
Toxicity & Defense
Parotoid glands secrete bufotoxins when the toad is stressed or bitten. These are milky, bitter, and can be irritating to mucous membranes or toxic if ingested by pets.
Ecological Role
Vital pest controllers in both wild and agricultural settings. They serve as a middle-link in the food web, consumed by hognose snakes and various birds of prey.
Similar Species
Fowler's Toad (Anaxyrus fowleri) has 3 or more warts per spot and parotoid glands that touch the cranial crests. Southern Toad (Anaxyrus terrestris) has higher, knobbed crests.
Observation Tips
Listen for their long trills near shallow ponds on warm spring rainy nights. Use a dimmed flashlight to spot them foraging in garden mulch during summer evenings.
Handling & Safety
Safe for humans to touch, but hands must be washed immediately. Do not touch eyes or mouth after handling. Skin oils and soaps on human hands can harm the toad's sensitive skin.
Seasonal Activity
Active from early spring through autumn. They hibernate (brumate) underground below the frost line during winter months.
Cultural Significance
Often featured in folklore as a gardener's friend. They have been historically (and incorrectly) associated with causing warts in humans through touch.
Interesting Facts
A single female can lay up to 20,000 eggs. These toads can 'drink' water through a permeable patch of skin on their abdomen called a 'seat patch'.