As colder weather sets in, the frogs then distribute extreme levels of glucose through their bodies, with it concentrating in the heart, liver, skeletal muscles and blood. Minnesota has four types of ...

DULUTH, Minn. - A previously little-known infectious disease has emerged as a major killer of frogs in Minnesota and nine other states, according to a study by the U.S. Geological Survey recently ...

Cope's gray tree frog. Northern cricket frog. Great Plains toad.

The Northland frogs began their calling in about mid-April. Tiny chorus frogs started with long drawn-out creeks. This was quickly followed by duck-like "glucking" sounds from wood frogs. Before the ...

LONG LAKE, Minn. — Half an hour past sunset in rural western Hennepin County, Madeleine Linck strains her ears. She’s listening, believe it or not, for the sounds of courtship. Frog courtship, that is ...

DULUTH, Minn. – A previously little-known infectious disease has emerged as a major killer of frogs in Minnesota and nine other states, according to a study by the U.S. Geological Survey recently ...