Their forests are not infested with those ferocious animals which are the terror of those of other Asiatic countries. The tiger, elephant, and rhinoceros are unknown: the wild buffalo and hog are the only ones of which the native has any dread. These attain an enormous size, but are not mischievous, unless provoked. The dried flesh and hides of these animals, as well as of deer and wild cattle, which are in immense numbers, form a considerable article of trade amongst the natives, the "tappa" or dried flesh being used for food, and the hides for exportation. Their serpents, however, attain an enormous size: the largest are those of the Boa species (Constrictor), and will devour a horse or a cow at a meal. [96] Of this genus there is one variety very beautifully marked, which frequents the houses, and is called by the Spaniards (Culebra casera), the house snake, [97] and by the Indians "Sawa." These are often seen from 10 to 12 feet in length, but are very harmless. Few houses are without one or more of them in the cellars, stables, &c. but they are seldom disturbed, as they are said to devour rats and other noxious animals; though, when these fail them, they attack fowls, or even goats. They form a favourite article of food with the Chinese, who keep them in jars to fatten, and the Indians may be often seen carrying them through the streets for sale. Of other varieties they have great numbers; some of which, as the "dahun palay," or leaf of rice, of a deep green and yellow, which frequents the rice fields, and the "mandadalag," or whip-snake, are excessively venomous: accidents from these animals are not, however, very frequent; from whence it may be concluded, that the superstition of the natives has greatly exaggerated the number of venomous ones: and this may be the more readily inferred, not only from their excessively superstitious character, and the common custom of all nations in this particular; but also from the thousand ridiculous fables told by them of the cameleon, which is very common in the woods, and perfectly harmless. The Indian name for it is "Ynyano." Of minerals they have an inexhaustible supply: gold is found in almost all the streams, and even in the sands of the shores of the Bay after blowing weather: no mines of it have as yet been wrought, though they are known to exist. The quantity obtained by the rude efforts of the natives merely washing the sands of the torrents, is very great, and certainly does not fall short of 4 to 500,000 dollars worth annually, as great quantities are expended in gilding for the churches, &c. &c. Silver is also found, but in small quantities. Virgin copper is another produce of their mountains: pieces of it are frequently met with in the torrents, and on the shores of some of the islands (Masbate, Burias, and Ambil). The negroes have also been seen with rude ornaments, and even with utensils made from it.