[单项选择] Only two animals have entered the human household otherwise than as prisoners and become domesticated by other means than those of enforce servitude (束缚): the dog and the cat. Two things they have in common, namely, that both belong to the order of carnivores and both serve man in their capacity of hunters. In all other characteristics, above all in the manner of their association with man, they are as different as the night from the day. There is no domestic animal which has so rapidly altered its whole way of living, indeed its whole sphere of interests, that has become domestic in so true a sense as the dog; and there is no animal that, in the course of its century-old association with man, has altered so little as the cat. There is some truth in the assertion that the cat, with the exception of a few luxury breeds, such as Angoras, Persians and Siamese, is no domestic animal but a completely wild being. Maintaining its full independence, it has taken up its abode in the ho
A. dogs are more domesticated than cats
B. dogs are more lovable than cats
C. though different, dogs and cats have their own charms
D. both dogs and cats can be kept as pets in one house