Canary Dog! Excellent, but difficult, breed. They require a pretty firm hand but can make fine pets and superb watchdogs. They tend to be one family dogs and wary of strangers
A certain other breed, however, has never met a stranger:
Vicious, ain't he?
I have an Amstaff and adopted a Pitbull from the pound.
They are fine dogs - mine aren't agggresive with people unless they are given reason to be.
A baby have been killed by every breed of dog and 5 gal pails - parents need to keep a close eye on infants.