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"Toads."
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Toads
\"Developed by literacy experts for students in kindergarten through grade three, this book introduces toads to young readers through leveled text and related photos\"--Provided by publisher.
Book
The toad
An overview of toads that includes what they eat and their distinguishing characteristics.
Book
A hippy-hoppy toad
A tiny toad suddenly finds himself in a tree then, as other creatures startle him with a peck, a buzz, or a bump, he hops to new locations along the road.
Book
Isolated dwarfism and sexual dimorphism in a mainland population of the greater short-horned lizard
Body size is an important biological concept as it impacts nearly all aspects of an organism. In mainland systems, body size tends to show clinal variation; however, drastic body size shifts are typically limited to insular systems in correspondence with abrupt changes in climate patterns and resource availability, often in coordination with reduced genetic diversity. We investigate a rare occurrence of dwarfism and its influence on sexual size dimorphism (SSD) among two mainland species inhabiting the San Luis Valley (Valley) using museum and live specimens. The Valley population of the greater short-horned lizard (Phrynosoma hernandesi) is 33.7% smaller and the Valley population of the Great Plains toad (Anaxyrus cognatus) is 32.9% smaller than populations surrounding the Valley (Outside). The greater short-horned lizard exhibits female-biased SSD range wide, and female-biased SSD among Valley populations is maintained for head length and width but is inconsistent among test groups for radius, hand, and femur length. In the Great Plains toad, SSD is absent among museum specimens from the Outside population and live specimens the Valley population, but shows a weak presence in parotoid gland morphology among museum specimens from the Valley. Although the mechanisms underlying dwarfism and possible selective pressures associated with shifts in female-biased SSD are unknown, we present a rare instance of mainland dwarfism and its influence on SSD.
Journal Article
Horned toads are not toads!
Describes horned toads, their habitat, diet, and other interesting facts.
Book
Evolution's amazing arms race
Biologist Oné Pagán introduces readers to a variety of creatures with unusual survival strategies, from cone snails and jellyfish to poison toads and spitting spiders in Strange Survivors.
Journal Article
Frogs and toads
\"From the smooth, damp animals that leap about to the warty species that tend to run or walk, this book is a guide to these popular and charismatic creatures. Chris Mattison describes the evolution and classification of frogs and toads, highlighting distinctive and notable species and providing detailed information about each of the 49 recognized families. He describes their eventful life cycle, diverse habitats, and the various methods they use to attract mates and hunt for food. The book also explores frogs' interaction with humans, from modern day collection for the meat trade, scientific research, and the trade in exotic pets, to how their survival is threatened by over-exploration, habitat destruction, climate change, and disease.\"--Jacket flap.
Book