American Toad (Anaxyrus americanus)
Order Anura, Family Bufonidae, Genus Anaxyrus. Known as "True Toads," they are characterized by warty skin and parotoid glands.
Species
American Toad (Anaxyrus americanus)
Family
Order Anura, Family Bufonidae, Genus Anaxyrus. Known as "True Toads," they are characterized by warty skin and parotoid glands.
Size
Adult SVL typically ranges from 5 to 10 cm (2-4 inches). Females are generally larger than males. Weights vary by health and hydration but range between 20-50 grams.
Conservation
IUCN status: Least Concern. Populations are stable and they are highly adaptable to human-altered landscapes, though they are susceptible to pesticides and habitat fragmentation.
Description
A classic backyard visitor, the American Toad is the quintessential 'warty' toad of North America. Its gold-flecked eyes and melodic spring trills make it a favorite of nature enthusiasts.
Key Features
Check for 1-2 warts within each dark spot on the back and cranial crests that do not touch the parotoid glands or only barely connect.
Physical Description
Robust, stout body with a short, blunt snout. Possesses prominent cranial crests and large, kidney-shaped parotoid glands behind the eyes. Short, thick limbs adapted for hopping and walking rather than leaping.
Skin Texture & Coloration
Highly rugose, warty skin. Coloration is typically brown, gray, or olive, often with darker spots containing 1-2 warts each. The ventral surface is usually light with dark speckling; the dorsum may feature a pale vertebral stripe.
Distinguishing Features
Identification is confirmed by looking for 1 to 2 warts per dark dorsal spot and noticing that the cranial crests are either separate from or only connected to the parotoid glands by a short spur.
Habitat
Extremely versatile, found in forests, grasslands, and suburban gardens. Requires semi-permanent ponds or shallow pools for breeding and friable soil for burrowing.
Geographic Range
Common throughout eastern North America, from eastern Canada down to the southeastern United States, and west to the eastern edge of the Great Plains.
Behavior
Primarily nocturnal or crepuscular, though active on cloudy days. They are terrestrial and spend much of the day burrowed in soil or under leaf litter. When threatened, they inflate their bodies to look larger.
Diet & Feeding
Generalist carnivore eating a wide variety of invertebrates including insects, spiders, earthworms, and slugs. They use a classic flick-and-retract tongue mechanism to capture prey.
Reproduction
Breeding occurs from spring to early summer. Males produce a long melodic trill to attract females to shallow water. Eggs are laid in long, gelatinous double-strings tangled in aquatic vegetation.
Vocalizations
A high-pitched, musical trill lasting between 6 and 30 seconds. The call is remarkably pleasant and bird-like compared to the croaks of many other frog species.
Life Cycle
Eggs hatch in 3-12 days into small black tadpoles. Tadpoles metamorphose into "toadlets" in 30-50 days. They reach sexual maturity in 2-3 years and can live up to 5-10 years in the wild.
Conservation Status
IUCN status: Least Concern. Populations are stable and they are highly adaptable to human-altered landscapes, though they are susceptible to pesticides and habitat fragmentation.
Toxicity & Defense
Produces bufotoxins in the parotoid glands and skin. These chemicals are irritating to mucous membranes and can be dangerous or even fatal if pets ingest large amounts.
Ecological Role
Important pest controller in both natural and agricultural ecosystems. They serve as a vital link in the food chain, preyed upon by snakes like the Hognose Snake.
Similar Species
Fowler's Toad (Anaxyrus fowleri) which has 3 or more warts per spot; Southern Toad (Anaxyrus terrestris) which has higher, more bulbous cranial crests.
Observation Tips
Look for them on warm, humid evenings near porch lights where they hunt attracted insects, or listen for the long trills near shallow water in April and May.
Handling & Safety
Handle with wet hands only; wash hands immediately after. Keep away from pets and eyes due to toxin secretions. Do not handle if you have applied sunscreen or bug spray.
Seasonal Activity
Active from early spring through autumn. During winter, they burrow deep below the frost line in a state of brumation to survive freezing temperatures.
Cultural Significance
Frequently appearing in folklore and children's literature (like 'Frog and Toad'), they symbolize garden health and the transition from winter to spring.
Interesting Facts
The American Toad can eat up to 1,000 insects in a single night. Despite the myth, handling them does not cause warts in humans, though their secretions can sting eyes.