American Toad (Anaxyrus americanus)
Order Anura, Family Bufonidae, Genus Anaxyrus. This family consists of 'true toads', characterized by parotoid glands and dry, warty skin.
Species
American Toad (Anaxyrus americanus)
Family
Order Anura, Family Bufonidae, Genus Anaxyrus. This family consists of 'true toads', characterized by parotoid glands and dry, warty skin.
Size
Adult snout-to-vent length (SVL) typically ranges from 50–100 mm (2–4 inches). Females are generally larger than males. Weights vary but stay within 20-50 grams usually.
Conservation
IUCN status: Least Concern. Population is stable, though they face local threats from habitat fragmentation, road mortality, and lawn chemicals.
Description
A classic backyard inhabitant of North America, the American Toad is a resilient and beneficial amphibian. With its camouflaged, warty skin and golden eyes, it is a master of the forest floor, blending perfectly into leaf litter.
Key Features
Dry warty skin, 1-2 warts per dark spot, parotoid glands separate from or barely touching cranial crests via a spur.
Physical Description
A robust, thick-skinned toad with a squat body. It features large, kidney-shaped parotoid glands behind the eyes and prominent cranial crests on the head. The limbs are relatively short, and the feet are designed for hopping rather than swimming.
Skin Texture & Coloration
Skin is dry and highly tuberculate (warty). Coloration varies from brown, gray, to olive-red with darker spots. Each dark spot on the back typically contains only one or two warts. A light-colored stripe often runs down the center of the back.
Distinguishing Features
The diagnostic feature is the combination of its cranial crests and parotoid glands; specifically, the crests are either separate from or connected to the parotoid glands by a short spur. Each dark dorsal spot usually contains 1-2 warts.
Habitat
Extremely versatile; found in forests, grasslands, suburban gardens, and agricultural fields. Requires semi-permanent ponds or shallow pools for breeding.
Geographic Range
Native to eastern North America, ranging from central Canada through the eastern United States, excluding the southernmost coastal plains.
Behavior
Primarily nocturnal and terrestrial. They are relatively slow-moving hoppers. When threatened, they often remain still or inflate their bodies; they also secrete toxins from their parotoid glands if bitten.
Diet & Feeding
Generalist carnivore eating a wide variety of invertebrates including beetles, snails, slugs, earthworms, and spiders. They utilize a 'sit-and-wait' ambush strategy using a sticky tongue.
Reproduction
Breeding occurs from March to July. Males produce a long, musical trill to attract females to shallow water. Eggs are laid in two long, gelatinous strings, often numbering in the thousands.
Vocalizations
The advertisement call is a high-pitched, melodic trill lasting 6 to 30 seconds. It is often described as one of the most beautiful sounds in the amphibian world.
Life Cycle
Eggs hatch in 3-12 days into small black tadpoles. Metamorphosis occurs in 5-10 weeks. Toadlets are tiny (approx 1cm) and take 2-3 years to reach sexual maturity. Lifespan is 1-5 years in the wild.
Conservation Status
IUCN status: Least Concern. Population is stable, though they face local threats from habitat fragmentation, road mortality, and lawn chemicals.
Toxicity & Defense
Produces bufotoxins from parotoid glands that are irritating to mucous membranes and can be dangerous to small pets if ingested. It is not harmful to touch, but hands should be washed afterward.
Ecological Role
Secondary consumer that controls insect populations. They serve as a vital food source for hognose snakes and various birds of prey.
Similar Species
Fowler's Toad (Anaxyrus fowleri) - has 3 or more warts per spot and crests that touch the parotoid glands directly. Southern Toad (Anaxyrus terrestris) - has more prominent, knobbed cranial crests.
Observation Tips
Look for them on warm, rainy nights on roads or near garden lights. During breeding season, listen for their long trills near shallow, sun-warmed ponds or ditches.
Handling & Safety
Safe to handle briefly with wet hands, but do not touch your eyes or mouth after handling due to skin secretions. Always wash hands thoroughly after contact.
Seasonal Activity
Active from spring through autumn. They hibernate during winter by digging into the soil below the frost line.
Cultural Significance
Commonly featured in North American children's literature (e.g., 'Frog and Toad'). Often viewed as a gardener's friend due to its massive consumption of pest insects.
Interesting Facts
They can remain in a state of brumation (hibernation) deep underground below the frost line for the entire winter. A group of toads is sometimes called a 'knot'.