He was ready to play with any and all comers at any and all times.

You could arouse him from a deep slumber and he would be ready to engage in any form of gaiety at a second's notice.
They talk about "charm." Some people have it to a wonderful degree.

You like them the minute you meet them, and often don't really know why.
Perhaps because you simply can't help it.

Well, that was the chief characteristic of Little Wanderobo Dog.

He had more charm than anything I've ever met, and so it is only natural that he should have walked into our affections in the most natural, unaffected sort of way.
I don't know what he thought of us, but I really believe that he thought he had gone to Heaven.