If he couldn't get what he wanted at the Morrises', he went out and stole, or visited the dumps at the back of the town.
When he did get ill, he was more stupid about doctoring himself than any dog that I have ever seen.

He never seemed to know when to eat grass or herbs, or a little earth, that would have kept him in good condition.

A dog should never be without grass.

When Dandy got ill he just suffered till he got well again, and never tried to cure himself of his small troubles.

Some dogs even know enough to amputate their limbs.