American Toad (Anaxyrus americanus)
Order: Anura, Family: Bufonidae, Genus: Anaxyrus, Species: americanus. Bufonids are known as 'True Toads,' characterized by the presence of parotoid glands and a lack of teeth in the upper jaw.
Species
American Toad (Anaxyrus americanus)
Family
Order: Anura, Family: Bufonidae, Genus: Anaxyrus, Species: americanus. Bufonids are known as 'True Toads,' characterized by the presence of parotoid glands and a lack of teeth in the upper jaw.
Size
Adult SVL typically ranges from 50 to 100 mm (2-4 inches). Females are generally larger than males. Weight varies by hydration and season but generally stays between 20-50 grams.
Conservation
IUCN Status: Least Concern. Populations are stable and they are very tolerant of human-altered landscapes, though they are susceptible to pesticides and habitat fragmentation.
Description
An iconic North American amphibian, the American Toad is a gardener's friend. Its bumpy skin provides excellent camouflage against soil and dead leaves. Despite their 'grumpy' appearance, they are gentle creatures essential for controlling insect populations.
Key Features
Warty skin, prominent parotoid glands behind eyes, short limbs, and 1-2 warts per dark dorsal spot.
Physical Description
A robust, squat amphibian with short legs. It features a wide head with prominent cranial crests and large, kidney-shaped parotoid glands located behind the eyes. The pupils are horizontal and the iris is typically gold or bronze.
Skin Texture & Coloration
The skin is dry and warty (tuberculate). Coloration varies from brown, gray, to olive or brick red. There is often a light mid-dorsal stripe. The belly is usually light-colored with dark speckles. Skin patterns often include dark spots containing only 1-2 warts.
Distinguishing Features
Distinguished by parotoid glands that either do not touch the cranial crests or are connected to them only by a short spur. Dark dorsal spots typically contain only one or two large warts.
Habitat
Highly adaptable, found in forests, grasslands, and suburban gardens. Requires semi-permanent ponds or shallow pools for breeding but is otherwise terrestrial, often burrowing into loose soil or leaf litter.
Geographic Range
Widely distributed across eastern North America, from southeastern Canada through the eastern United States to the edge of the Great Plains.
Behavior
Primarily nocturnal, though active on cloudy, damp days. They are terrestrial hoppers that use their strong hind legs for short jumps. When threatened, they inflate their bodies to appear larger or secrete toxins from their skin.
Diet & Feeding
Generalist carnivore eating a variety of invertebrates including beetles, snails, slugs, ants, and earthworms. They use a 'sit-and-wait' strategy, flicking out a sticky tongue to grab prey.
Reproduction
Breeds in spring (March-May). Males gather in shallow water and produce long, musical trills. Amplexus is axillary. Females lay eggs in long, gelatinous double-strings that can contain thousands of eggs.
Vocalizations
The advertisement call is a long, high-pitched musical trill lasting 6 to 30 seconds. In large choruses, the overlapping trills create a constant vibrating hum near the water's edge.
Life Cycle
Eggs hatch in 3-12 days. Tadpoles are small and black, often forming large schools. Metamorphosis occurs in 5-10 weeks. Toadlets are tiny (under 1cm) when they first emerge onto land. Lifespan is 1-5 years in the wild, longer in captivity.
Conservation Status
IUCN Status: Least Concern. Populations are stable and they are very tolerant of human-altered landscapes, though they are susceptible to pesticides and habitat fragmentation.
Toxicity & Defense
Possesses bufotoxins in the parotoid glands and skin. These can irritate mucus membranes and are dangerous if ingested by small pets. Warning coloration is absent, relying instead on camouflage.
Ecological Role
Acts as both a significant predator of garden pests and a prey source for garter snakes, crows, and raccoons. Their presence indicates a healthy, pesticide-free local environment.
Similar Species
Fowler's Toad (Anaxyrus fowleri) which has 3 or more warts per spot and parotoid glands that touch the cranial crests. Southern Toad (Anaxyrus terrestris) which has high, knobbed cranial crests.
Observation Tips
Look in gardens or near porch lights at night after a warm spring rain. During the day, look under logs, stones, or in flower pots where they seek moisture and shade.
Handling & Safety
Handle with wet hands to protect their sensitive skin. Do not touch your eyes or mouth after handling due to skin secretions. Always wash hands thoroughly after contact.
Seasonal Activity
Active from early spring to late autumn. They hibernate (brumate) during winter by burrowing below the frost line in loose soil.
Cultural Significance
Commonly featured in children's literature (e.g., 'Frog and Toad'). In many cultures, toads symbolize fertility or rain. They are often seen as omens in folklore, both positive and negative.
Interesting Facts
Toads do not cause warts in humans; this is a myth. They can live over 30 years in protected captive environments. They 'drink' water through a permeable patch on their abdomen called a pelvic patch.