"Opinions vary as to the weight a night-dog should attain, but a small dog, no matter how persevering he may be, cannot be so effective as one which has the qualities of being large, game, and active. Suppose a dog of 50 or 60 lbs weight only, were to jump at a man, the latter could not be knocked down. A clever poacher would wait his opportunity, catch the animal in his arms, and throw him over an adjacent wall or fence, well aware the dog could not jump back. A night-dog should not be less than 80 and if he is 100 lbs strong and active, so much the better. He ought to be able to jump a gate with ease and to get over ground at a good pace. For color, a brindle is to be preferred, not being so plainly visible at night as a red, fawn, or even black dog."

After reading the above paragraph - what are your thoughts on the correct size for a good and capable watch dog?