. L'animal livre. Animaux domestiques. Je LA GRENOUILLE GRENOUILLE Il n'est pas si facile à apprivoiser que le crapaud, mais il fait un joli inhabi- tion de l'aquarium. Il est plus fin que le crapaud, et n'est pas couverte de verrues. Il est glissante au toucher, et, comme le crapaud est froid, pour les deux d'entre eux sont des créatures à sang froid, ce qui signifie que leur sang est la température de l'atmosphère environnante. Le sang d'un animal à sang chaud maintient un certain temperatttre- si l'air est froid ou chaud. La grenouille est aussi bon qu'un cavalier, et le crapaud est un swimnier beaucoup plus puissant, puisqu'il vit la plupart du temps

• Contributeur: Central Historic Books / Alamy Banque D'Images
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. The pet book. Pets. THE FROG I HE FROG is not so easily tamed as the toad, but it makes an attractive inhabi- tant of the aquarium. It is slimmer than the toad, and is not covered with warts. It is slippery to the touch, and, like the toad is cold, for both of them are cold-blooded creatures, which means their blood is the temperature of the surrounding atmosphere. The blood of a warm-blooded animal maintains a certain temperatttre whether the sur- rounding air is cold or hot. The frog is quite as good a jumper as the toad, and is a far more powerful swimnier, since it lives most of the time in or very near the water. The frog shows its relation to the water by being the color of the brook bottom, or of the water-plants, green and yellow being its prevailing hues. The frogs, like the toads, have the power of changing color more or less to match their surroundings. The common green frog, the leopard and pickerel frogs are those most commonly kept in the aquarium. These species like to stay in the water, but they find most of their food in the rushes, or other vegetation along the banks of streams or ponds. ^ These frogs are all attractive singers. The bullfrog is also a common aquarium pet, but he cannot be trusted in the same taiik with any frogs or other creatures less huge than himself. He is the most aquatic of all our frogs, and can remain beneath water for a longer period than any. Nevertheless, he likes to come out on a fiat stone and enjoy the air and 251. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Comstock, Anna Botsford, 1854-1930; Lord, Henry B. ins; Wright, Albert Hazen, 1879-1970 ins; Comstock, Anna Botsford, 1854-1930. ins. Ithaca, N. Y. : Comstock

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