Bullfrog

Bullfrog

Rana catesbeiana

Size: to 6"

Habitat: prefers larger bodies of water

Notes: This big frog will eat almost anything that moves. They have been known to catch and eat birds.

Bullfrog
Green frog

Green frog (right) is similar but smaller. Neither of these frogs is likely to stray too far from water.


Gammarus

Amphipod crustaceans typically range in size from 2 to 50 mm, although a few may be larger. Amphipods are common in aquatic ecosystems throughout many parts of the world, inhabiting marine, brackish, and freshwater environments. A few species are also terrestrial. Amphipod means "different foot", a reference to the varied legs that are evident in the illustrations, as opposed to isopods.

The order Amphipoda, which contains nearly 7,000 described species, is divided into three suborders: Gammaridea, Caprellidea, and Hyperiidea. Gammaridea, with more than 5500 described species, is not only the largest amphipod suborder but also contains all of the freshwater and subterranean taxa. Approximately 21 superfamily groups, 95 families and more than 1000 genera are recognized within this suborder.