[ Ballantyne / The Rover of the Andes: A Tale of Adventure in South America ]
Ballantyne's subtitle says it all. First published in 1880 (London: James Nisbet), this novel mentions a Newfoundland only once:
The tame jaguar, however, was a very different style of animal. It did indeed like to be caressed, but it had gradually grown too large to be a safe plaything, and there was an occasional gleam in its eye which rendered Lawrence uneasy when he saw the Indian children playing with it. It was about the size of a small Newfoundland dog, but had grown up so gradually with the family that they appeared not to realise the danger attending its great strength. (Ch. 15)