"It looked like a junkyard with wild dogs, " adds Hearst's then-partner, entrepreneur Christopher Burch.
Every year in November, wildebeest and zebra move south from Angola across Zambia's plains, stalked by large and impressive clans of hyena, as well as wild dogs, cheetahs and lions.
Using Australian government data on endangered species, the researchers calculated that 16 threatened mammals would benefit from the presence of dingoes, while the wild dogs would only be detrimental to three species.
But the only direct challenge we encountered on the rutted track came from a pack of 12 wild dogs that briefly blocked our path, and then lazily chased our small convoy for a few hundred metres.
It's not unusual for an outbreak to kill an entire colony of wild prairie dogs.
In December, Richard Sumner and Julian Barnfield admitted unlawfully hunting a wild fox with dogs.
Responding to Mr Paterson's comments, Labour's shadow environment secretary, Mary Creagh, said "most people back Labour's ban on hunting wild animals with dogs".
Its role as both a prosecutor and campaign group was questioned by some Conservative MPs after members of Oxfordshire's Heythrop Hunt were fined in December 2012 for unlawfully hunting a wild fox with dogs.
On the Big Island, where people use dogs for hunting wild pigs, many residents have at least five and some as many 30 dogs, says Debbie Crazatta, founder of the Kohala Animal Relocation and Education Service, which helps find homes for stray dogs.
WSJ: Hawaii Turns to Dog Shrink as 'Incessant Barkers' Cut Plea Deals
Humans have introduced dozens of species into Australia - including wild horses, pigs, goats, dogs, cats, rabbits and foxes - and these have now become a major problem for the ecosystem.
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