Of birds there are over one hundred and fifty species, about ninety-five of which are residents and among these several peculiar to this island. The forests resound with the cries of parrots and other birds of beautiful plumage; from any point on the coast pelicans and other ichthyophagous birds can be observed darting into the waters after their prey; the lakes and rivers are the home of thousands of wild ducks; myriads of wild pigeons breed in the woods; and the number of insectivorous birds, including the sweet-singing nightingale, jilguero and turpial, the swallow and the small pitirre and colibri, is infinite. The caves are inhabited by swarms of bats, the guano of which, mingled with the calcareous detritus of the rocky walls, is found in great deposits and constitutes a good fertilizer. At the time of the discovery the Spaniards found very few kinds of quadruped mammals. One was the agouti, looking like a large rat and inhabiting the forests; another the coati, similar to the squirrel and easily domesticated. Three other classes are mentioned, the quemi, mohui and perro mudo (dumb dog), but are not now to be found and as the description of two of them almost tallies with that of the others above mentioned, it is possible that different names were applied to the same animals. It is possible, too, that reference was made to the solenodon or almiqui, an animal long thought to be extinct but of which several specimens have recently been found in Santo Domingo. This animal is about two feet, long and resembles a rat, but having a long prehensile snout and the habits of an ant-eater, it is considered to be a remnant of the early zoological type from which diverged both the rodents and the insectivorous animals of the present. The Spaniards introduced the European domestic animals, which immediately began to flourish. During the seventeenth and eighteenth century the principal and for a long time almost the only industry of the Spanish portion of the island was cattle-raising. Some of the cattle and pigs escaped to the woods and reverted to the wild state, and towards the middle and end of the seventeenth century great herds of wild cattle roamed over the island. Such herds no longer exist, but wild pigs have found their way to the most remote recesses of the mountains and are the plague of the fields. The equine species, sprung from the Andalusian horses brought by the Spaniards, has degenerated considerably and the best horses in the Republic today are of Porto Rican stock, but attention is at last being given to breeding. The largest herds of cattle roam about in the unfenced arid regions of the northwest. Hides are exported in large quantities, but there is little dairying. Of late years attention is being directed to improving the stock and several stock farms have been established near San Pedro de Macoris.