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The European spadefoot toad grows up to 10 cm (3.9 in) in length and is often inconspicuously coloured. They have squat bodies with smooth skin and eyes with vertical pupils. They are predominantly fossorial (burrowing) frogs, which dig into sandy soils. Pelobatidae frogs burrow backwards and they spend much of their time in the ground.
Yellow-bellied toads have compact bodies - though not so flat as the related European fire-bellied toad - and a rounded snout. The pupils are heart-shaped, with the eardrums not visible. The pupils are heart-shaped, with the eardrums not visible.
When a toad is presented with a moving stimulus, it generally may react with one of two responses. Depending on the size and the configuration of the stimulus, it will either engage in orienting (prey-catching) behavior or avoidance (escape) behavior, which consists of "planting-down" defensive postures or a crouching avoidance response.
New Jersey has 16 species of frogs and toads, 13 of which can and have been sighted in North Jersey. ... Vertical pupil. Sharp, black spade on each foot. Fowler's toad.
As suggested by their name, these frogs have hard, keratinous protrusions present on their feet, which help them to dig. Like most fossorial frogs, they dig backwards into the ground. [1] They differ from true toads because they have vertical pupils and no parotoid gland. [2] The American spadefoot toads are terrestrial when not underground.
The pupil is vertical and iris is silver. The trilling frog is a medium-sized short, fat frog (5 centimetres measured from snout to posterior), usually of a brown and tan colour with sharply differentiated mottling, much like army desert camouflage. This frog is white underneath. The pupil of this frog contracts
The irises come in a range of colours and the pupils in a range of shapes. The common toad (Bufo bufo) has golden irises and horizontal slit-like pupils, the red-eyed tree frog (Agalychnis callidryas) has vertical slit pupils, the poison dart frog has dark irises, the fire-bellied toad (Bombina spp.) has triangular pupils and the tomato frog ...
Their sister group are the Pelodytoidea, consisting of North American spadefood toads and parsley frogs. A striking characteristic is the vertically slit pupil in daylight. The tongue is thick, circular, and almost entirely adhering to the floor of the mouth.