Bullfrog (Rana catesbeiana): The largest North American frog at 3.5 - 8 inches, about the size of a baseball. Native to the southeastern corner Minnesota but it's range has been expanding and is now found many other places. Green skin coloration;  males have yellow throats and females have white throats. Live in full bodies of water such as Lyman Lakes. Tadpoles take two years to grow into frogs and another 3 years before they reach full adult maturity/size. Call sounds much like a foghorn.

Green Frog (Rana clamitans): At 2.3 – 3.5 inches long, this frog is about the size of a cell phone. It looks similar to the bullfrog but is often slightly more brown than green in coloration. Also typically have dark mottling under legs and on head. Live in full bodies of water and occasionally water filled ditches. Requires one year for tadpoles to turn into frogs, and another two years to reach full adult size.

Northern Leopard Frog (Rana pipiens): 2 – 3.5 inches long, about the size of a deck of cards. Brown or green coloration with rows of irregularly spaced round spots.  Usually live in grasslands, wet meadows, and forest edges. Requires approximately 100 days to turn into frogs and 2 to 4 years total to reach full adulthood. Heard calling in Kettle Hole Marsh and seen hunting in the prairies.

American Toad (Bufo americanus): 2 – 3.5 inches long, about the size of a deck of cards. This Toad is the probably the most often viewed by the general public. Typically coloration is brown or reddish with one or two warts in the middle of the dark spots on their back. Their white chest typically has dark speckles on it. While the toad usually lives in forests and woodland habitats, it also lives in grasslands, residential yards, and gardens. Require 6 weeks to turn into frogs and then 2 to 3 years to reach full adulthood. Can be heard trilling in the retention pond.

Cope’s Grey Treefrog (Hyla chrysoscelis): 1.25 - 2 inches, about the size of the average person’s thumb. Skin coloration is normally solid green or mottled gray with bright yellow-orange coloring on inner surface of hind legs. Their skin secretions may be irritating to human eyes and nose. Mainly lives in the woodland and forest habitats but is often found in residential areas. Takes two months to turn into frogs and two years to reach full adulthood.

Gray Treefrog (Hyla versicolor): 1.25 - 2 inches, about the size of the average person’s thumb. Closely resembles the Cope's gray treefrog (H. chrysoscelis) and can only be distinguished in the field by their call. The two similar species are genetically incompatible, but otherwise are visually the same. Mainly lives in the woodland and forest habitats but is often found in residential areas. Takes two months to turn into frogs and two years to reach full adulthood.

Western Chorus Frog (Pseudacris triseriata): .75 – 1.25 inches, about the size of a half dollar. Also known as the boreal chorus frog, which is actually a sub-species. Their coloration has a lot of variation, ranging from tan to shades of gray or red. Three dark stripes extend from the head down the back and one additional line runs through the eye. A white line extends along the upper lip towards the back. Found in habitats ranging from urban environments to grasslands and forest edges. Tadpoles become frogs in three months and reach full adulthood within a year. Heard at Kettle Hole Marsh, Oxbow Pond, and other wetlands along the Cannon River.

Wood Frog (Rana sylvatica): 2 – 2.75 inches, about the size of a small cell phone. Skin coloration is usually brown, but ranges from shades of reddish-brown to almost black.  A masklike patch of dark skin extends backwards from the eyes. Lives in woodland and forest habitats. Takes 6 to 9 weeks for tadpoles to become frogs and 2 to 4 years to reach full adulthood.  Heard at Kettle Hole Marsh, Oxbow Pond and other wetlands along the Cannon River.

Tiger Salamander (Ambystoma tigrinum) - Tiger salamanders can be commonly found in the North Woods area of Minnesota and Wisconsin.  Their lengths range from 7 to 8 inches (17cm to 20cm).  It is dark grey or black with highly variable and random yellow blotches that extend to the belly.  The lower lip and throat are yellow.  Their habitats include woods, open areas, and even suburbs.  Breeding areas include forest ponds, farm ponds, and gravel-pits.