(d) Intelligence.—Write accounts of evidence of intelligence, or reasoning power, which you have observed in dogs.
(e) Voice.—What is the ordinary voice of the dog? What other sounds do dogs make, and what do they mean?
(f) Play.—How do dogs play? Do you think dogs have any sense of humour, or are able to appreciate a joke for the joke’s sake? Have you ever seen any expression resembling a smile on a dog’s face?
6. Puppies.—(a) Appearance.—Are puppies blind and helpless when they are born, or are they active? How soon can they see? Are the proportions of the body and limbs markedly different from those of the full-grown dog? At what age is a dog full-grown?
(b) Play.—Does a puppy play in the same manner as a kitten? What differences have you noticed? Have these differences any connection with the methods of catching the prey of the adult animals?
(c) Education.—Have you ever seen a puppy being taught to do anything by its mother? Write full accounts of such cases.
7. Different breeds of dogs.—Make notes of your observations of as many different breeds of dogs as possible, e.g. collies, terriers, retriever, fox-hound, pointer, spaniel, etc., and describe the resemblances and differences in size, form, habits, intelligence, etc.
Fig. 169.—The Cat.