Because of a quirk of biology, a litter of puppies can have more than one father. We explore these intentional "multi-sired" litters.
In this unabashed love letter to the two breeds that have captivated her over the decades – the Mastiff and, later, the Bullmastiff – Judy Nash sums up their essence with anecdotes so powerful and moving, we'd keep the Kleenex close by.
If you were judging a ring full of Mastiffs in Heaven, which dogs would you like to see within those pearly gates?
Sherlock Holmes and Dick Tracy, Quincy and Kojak: Popular culture is stuffed with images of the tireless detective, gumshoeing his way into danger and intrigue.   But those fictional sleuths have nothing over the world’s first real private detective, Allan Pinkerton.  

This brindle bitch has a correctly sized and placed ear, which contributes to her very typey head. Photo: Denise Flaim
Ears are the finishing touch on a Mastiff head, and depending on their size, they can denote fierceness, sweetness and everything in between.
Over the centuries, reports of crossbreeding have been rampant in the Mastiff. But here is one case with an actual paper trail.
A lifetime of collecting Mastiff memorabilia led Steve Oifer to set up a private "Mastiff Museum" in his New Jersey home.
If you don't know this dog from the 1980s, we think you should. Some of the world's most respected Molosser experts call him one of the greatest Mastiffs ever. But can there be too much of a good thing? 
These weren’t just Mastiff mixes. They were the key to conquering blindness in the Mastiff breed.
Mastiff fancier Virginia Wind explains how public displays of affection toward Mastiffs can sometimes backfire, with tragic results.