Pickerel Frogs have spots but with variable rectangular brown spots in rows, which can be better viewed with the help of microscopy using a microscope such as stereo dissecting microscope. The rectangular brown spots are the main means to tell them from Leopard Frogs, which have black oval spots of which can be differentiated clearly by means of microscopy under a microscope like the stereo dissecting microscope. The fundamental color of Pickerel Frog is yellow-brown with orange on the groin and the underside of the hind legs, which can be better viewed through microscopy under the microscope such as stereo dissecting microscope. Pickerel frogs are particularly common along streams and lake shores close to inlets and outlets. They also scavenge along grassy-sedge woods roads, meadows and old fields among others. They are frequently seen related with Mink Frogs in vegetated water habitations and with Northern Leopard Frogs in land habitations.
Pickerel frogs surface from hiding in spring and procreate throughout May. The male’s call is like a short low-pitched snore that does not transmit far. Females generate a globular mass of approximately a thousand eggs fixed to plants approximately ten centimeters beneath the surface. These egg masses are not observed very frequently. The tadpoles grow quickly and develop into frogs during August and early September. Adults hide underneath the bottom debris and silt of their aquatic environments. Pickerel Frogs feed on ants, spiders, beetles, sawfly larvae and a variety of other invertebrates.
Mink Frogs are normally green to brown, frequently with spots or mottles, which can be better viewed through the aid of microscopy under the microscope such as stereo dissecting microscope. Their favored habitat is quiet waters with plenty of plants such as lily pads and pickerel weed. Males place themselves at appropriate spawning locations among the surface vegetation and start calling a mate. The male calls for a mate day and night with a recurrent cut sound. Females generate approximately a thousand eggs every year. Mink Frogs are extremely hesitant. Several cautious sneaking is needed to get near to one. The most excellent time to watch them is at night since they tend to remain still while a flashlight beam is on them. They can be structurally examined through microscopy using a microscope such as stereo dissecting microscope. Mink Frogs feed on a variety of land and water creatures especially ants, beetles, moth larvae and flies among others. When picked up, they exude a smell like rotting onions or like a mink.

Bullfrogs are the biggest frog. They are located in quiet coves of lakes with lots of vegetation particularly water lilies. Majority of them are green or yellow-green but rarely a blue Bullfrog, which is deficient in yellow pigment turns up. Such color combinations are better observed with the aid of microscopy under the microscope like the stereo dissecting microscope.
Bullfrogs are the final amphibians to surface in spring. Their booming bass call is heard from middle of June to July, even though last year’s tadpoles may surface a month or two months earlier. Males leave from shore and inhabit among the water lilies to call females. Spawning transpires soon after the females are grasped by males. She lays her eggs in a large, film-like mass on the surface among the water lilies. Bullfrogs generate as many as twenty thousand eggs yearly. The tadpoles take two years to grow into young Bullfrogs. Their hind legs develop after the second winter. Tadpoles hide in the deep silt of the bottom of the lake. The Bullfrog season is not long. The Bullfrog feeds on birds, other frogs, fish, even their own tadpoles, as well as the common insects. When taken on by the hind legs, Bullfrogs may give out a startling scream or squeal.