This chap is part of a small group, who probably belong to a larger pack. Wild dogs always live as part of a pack, as their chances of survival when alone, or even as a group of 3 or less is pretty much zero.
Many sources indicate that Wild dog packs chase prey in 'relays', where one runs at the front and once it tires another takes over. The theory is that this allows them to keep chasing over great distances. However, this is completely impractical and untrue. Instead the dogs just have awesome endurance and can just keep running compared to most other wild animals.
Wild dogs can't kill animals in the same way as the big cats. Their front legs aren't as strong and their claws are blunt as they don't retract like on a cat. Therefore they can't grab an animal to deliver a killer bite in the neck. Instead dogs tend to chase their victim to exhaustion when they can kill them more easily. With smaller prey they will grab it and vigorously shake it side to side, usually breaking the animal's neck or back.
Find out about many different animals at www.crazycreatures.org