Mr. Wallace, who travelled on the Amazon and Rio Negro, about the year 1853, relates:--"The living specimen of this singular animal is a great rarity, even in its native country. In fact, there is not a city in Brazil where it would not be considered almost as much a curiosity as it is here. In the extensive forests of the Amazon the great Ant-eater is, perhaps, as abundant as in any part of South America; yet, during a residence there of more than four years, I never had an opportunity of seeing one. Once only I was nearly in at the death, finding a bunch of hairs from the tail of a specimen which had been killed (and eaten) a month previous to my arrival, at a village near the Capiquiare. In its native forests the creature feeds almost entirely on white ants, tearing open their nests with its powerful claws, and thrusting in its long and slender tongue, which, being probably mistaken for a worm, is immediately seized by scores of the inhabitants, who thus become an easy prey. The Indians, who also eat white ants, catch them in a somewhat similar manner, by pushing into the nest a grass-stalk, which the insects seize and hold on to most tenaciously. It may easily be conceived that such an animal must range over a considerable extent of country to obtain a plentiful supply of such food, which circumstance, as well as its extreme shyness and timidity, causes it to be but rarely met with, and still more rarely obtained alive." We have seen that the Ant-Bear lives exclusively upon ants, to procure which he tears open the hills, and when the ants flock out to defend their dwellings, draws over them his long, flexible tongue, covered with glutinous saliva, to which the ants consequently adhere; and he is said to repeat this operation twice in a second. "It seems almost incredible," says Azara, "that so robust and powerful an animal can procure sufficient sustenance from ants alone; but this circumstance has nothing strange in it, for those who are acquainted with the tropical parts of America, and have seen the enormous multitude of these insects, which swarm in all parts of the country to that degree that their hills often almost touch one another for miles together." The same author informs us that domestic Ant-Bears were occasionally kept by different persons in Paraguay, and that they had even been sent alive to Spain, being fed upon bread-and-milk mixed with morsels of flesh minced very small. Like all animals which live upon insects, the Ant-eaters are capable of sustaining a total deprivation of nourishment for an almost incredible time.