No other cat has so extensive a range as _Felis concolor_ and its close allies, variously known as puma, cougar and mountain lion, which extends from the Atlantic to the Pacific, and from latitude fifty-five or sixty north, to the extreme southern end of the continent. As far as is known, it is a recent development, for no very similar remains appear previous to post-tertiary deposits. Bears of the genus _Ursus_ are of no great antiquity in a geological sense, for we have no knowledge of them earlier than the Pliocene of Europe, and even later in America, but fossils becoming gradually less bear-like and approximating toward the early type from which dogs also probably sprung, go back to the early Tertiary creodonts. Cats, as we have seen, are chiefly tropical, while bears, with two exceptions, are northern, one species inhabiting the Chilian Andes, while the brown bear of Europe extends into North Africa as far as the Atlas Mountains. The family _Procyonidae_ contains the existing species which appear to be nearest of kin to bears. These are all small and consist of the well-known raccoon, the coatis, the ring-tailed bassaris and the kinkajou, all differing from bears in varying details of tooth and other structures. The curious little panda (_Aelurus fulgens_) from the Himalayas, is very suggestive of raccoons, and as forms belonging to this genus inhabited England in Pliocene times, it is possible that we have pointed out to us here the origin of this, at present, strictly American family; but, on the other hand, evidence is not wanting that they have always been native to the soil and came from a dog-like stock. As we have already seen, bears have the same dental formula as dogs, but as they are less carnivorous, their grinders have flatter surfaces and the sectorials are less sharp; in fact they have very little of the true sectorial character. It is unusual to find a full set of teeth in adult bears, as some of the premolars invariably drop out.