...At daybreak he reached some shallow pools full of large frogs, which so frightened his horse that he was obliged to keep them quiet by beating the water till he had drank... 
W.H.G. Kingston 「Great African Travellers」
...I have observed that the notes of frogs are different in different parts of the world...
Horatio Bridge 「Journal of an African Cruiser」
...Bait with frogs, crabs or fish, a piece of muskrat or duck for coon...
A. R. (Arthur Robert) Harding 「Deadfalls and Snares」
...The smell is, however, fetid and offensive, and hence toads areless exposed to the attacks of carnivorous animals and of birdsthan frogs, in which such glands do not exist...
J. Emerson Tennent 「Sketches of the Natural History of Ceylon」
...Besides grasshoppersand worms, they feed largelyupon animal matter such as lizards,shell fish, frogs, eggs and young ofbirds, and carrion...
Chester A. Reed 「The Bird Book」
...They are also less herbivorous in their diet,eating frogs, lizards, crabs and insects, as well as vegetables andfruit...
Robert A. Sterndale 「Natural History of the Mammalia of India and Ceylon」
..." Toads, frogs, mice, andeven snakes are eaten by the European hedgehog...
Robert A. Sterndale 「Natural History of the Mammalia of India and Ceylon」
...Moles live principally on earth-worms, snails, and small insects,though they are also said to devour frogs and small birds...
Robert A. Sterndale 「Natural History of the Mammalia of India and Ceylon」
...Living frogs in small cages or aquaria; living toads;some pungent liquid, as ammonia...
Worrallo Whitney 「A Guide for the Study of Animals」
... Cottonmouths observed by me retained a strong hold on fish, frogs, and sometimes mice, but almost always released large mice and baby chicks, which were not eaten until after death...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...most of the species of frogs, baby alligators, mice, rats, guinea pigs, young rabbits, birds, bats, squirrels, and lizards ...
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)」
...feeding on frogs...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...The high percentage of cottonmouths infested with flukes is indicative of the use of frogs as a major source of food...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
... Shellfish, frogs,...
John Albert Leach 「An Australian Bird Book」
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