...In the evening hush could be heard the buzzing of insects and the croaking of the frogs... 
Vicente Blasco Ibanez Charlotte Brewster Jordan 「The Four Horsemen of the Apocalypse」
...Its food consists chiefly of rats,mice and frogs, and sometimes, but not often,poultry...
Chester A. Reed 「The Bird Book」
...Somewhat aquatic in its habits, living on frogs and crabs...
Robert A. Sterndale 「Natural History of the Mammalia of India and Ceylon」
...This food consists of green corn, grapes and other fruits, fish, frogs, clams, birds and their eggs and they are also fond of poultry...
Elmer Harry Kreps 「Science of Trapping」
...Various amphibia, either dead or alive, such as newts,mud puppies (necturus), salamanders, and several speciesof frogs and toads, especially tree toads...
Worrallo Whitney 「A Guide for the Study of Animals」
...Allen and Swindell (1948:5) stated that cottonmouths retain their hold after striking fish or frogs but will release a mouse after delivering a bite and are timid in striking at larger rodents...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...The most common food appears to be fish and frogs...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
... Shellfish, frogs,...
John Albert Leach 「An Australian Bird Book」
...Fish, frogs, insects...
John Albert Leach 「An Australian Bird Book」
... Frogs, shellfish, shrimps...
John Albert Leach 「An Australian Bird Book」
...A low-flying hunter of insects, snakes and frogs...
Frank M. Chapman 「What Bird is That?」
...Suppose anenclosure of a few acres is made for skunk, why not take in a pond andraise muskrat, coon, fish and frogs...
A. R. Harding 「Fur Farming」
...The food of the mink consists mostly of rabbits, partridges, quail,squirrels, muskrats, mice, fish, frogs, birds' eggs, etc...
A. R. Harding 「Fur Farming」
...Besides fish, they also eat large numbers of frogs, which are easilysecured...
A. R. Harding 「Fur Farming」
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