This last anecdote is also remarkable because of the wonderful instinctive antipathy existing between Dogs and Cats, an antipathy which is one of the most curious instances of inherited instinct, for a young kitten, who has never seen a Dog in its life will, on being approached by one, put up its back, and swear and spit with all the force of feline Billingsgate. It is only after living in the same house with a Dog for some time that a Cat will become reconciled to him, but when she once gets to tolerate his presence, the two often become very good friends. The most astonishing tale we have met with, with respect to their intelligence and sensibility, is one by Mr. C. H. Ross. He states that a Cat in his possession “would climb upon the top of the piano, and, sitting close underneath the picture” of a Bulldog, “fix its eyes upon the Dog’s face, and, putting back its ears, remain there, with a wild and terrified expression, for as long as an hour at a time,” and this, too, while there were two living Dogs in the house with whom she was on perfectly good terms. This is extraordinary enough, for it is usually stated that animals do not recognise pictures unless they are coloured, and the illustration in question was an engraving. But the queerest part of the story is yet to come. “During the time that he noticed this conduct on the Cat’s part, she was with kitten, and when the four kittens were born they were dead, and one of them, strange to say, had a Bull-dog-shaped head, marked almost exactly like the picture!” Instances are not wanting in which Cats have formed friendships with birds--creatures which, as a rule, they look upon as their natural prey. One example of an affection of this sort is extremely curious. A Cat and a Canary had acquired a great fondness for one another. The Canary used to perch on the Cat’s back and play all sorts of pranks with it. One day their master saw, with horror, the feline Damon rush upon his passerine Pythias and seize it in his mouth. He naturally thought that at last nature had triumphed over grace, but on looking round saw that another Cat had entered the room, to whose tender mercies the bird-lover would by no means trust his little friend. Like its natural enemy the Dog, the Cat is sometimes afflicted with _rabies_, or madness. Mr. Youatt, a great authority on the subject, says:--“Fortunately for us this does not often occur; for a mad Cat is a truly ferocious animal. I have seen two cases, one of them to my cost; yet I am unable to give any satisfactory account of the progress of the disease. The first stage seems to be one of sullenness, and which would probably last to death; but from that sullenness it is dangerous to rouse the animal. It probably would not, except in the paroxysm of rage, attack any one; but during that paroxysm it has no fear, nor has its ferocity any bounds.