More than 35 years later, Bdellovibrio biology is undergoing a revival owing to the original, pioneering genetics work of Thomashow and colleagues (13), which has been followed up by genome sequencing and the development of new gene inactivation methods to study the function of these bacteria (32, 42, 60).
They also have five pairs of eyes. The Freshwater Leech is a parasite that feeds on the blood of fish, frogs, turtles, and mammals. It should not be confused with other leeches, most of which prey only on insects, snails, and small creatures.
Frogs and tadpoles alike fall prey to a wide variety of birds and reptiles. Many kinds of birds who live in and around freshwater biomes can eat smaller frogs and tadpoles. Large bullfrogs are safe from all but the bigger birds, such as herons. Common avian predators of frogs include ducks, geese, swans, wading birds, gulls, crows, ravens and hawks. Frogs are also at risk of becoming a meal for garter snakes, water moccasins and other swimming snakes.