Researchers working with animals don't have to worry about getting enough eggs.

FORBES: Cloning's High Cost

The dog is a much more docile creature, the likely consequence of early humans preferentially working with animals they found easier to tame.

BBC: Dog evolved 'on the waste dump'

Working with animals and plants is interesting, not ennobling.

FORBES: It's Time To Kick Farmers Off The Federal Dole

Grain farmers replaced working animals with combines and planters, which demanded different homes, usually wide metal sheds.

ECONOMIST: The battle to save a vanishing American icon

Zabara built evidence to support his new theory, working first with lab animals and then inducing seizures in dogs.

FORBES: Rewiring the brain

She quotes one academic who says higher standards are demanded of people working on their own with animals, than of those left alone with a baby.

BBC: Nutbrown Review: Nursery staff skills questioned

The Riding Part: Sheri teaches herd dynamics, communicating with horses, horses as working animals, horses (and us) as sensate beings in a sensate world, horse heartbeats, grooming and tacking up.

FORBES: Connect

The industry was investigating, she said, and working with the Egyptian authorities to ensure the welfare of animals already at the facilities.

BBC: Australia halts cattle exports to Egypt over 'cruelty'

He is always on call and - when he is not examining the jaws and the paws of a lion - he may be rushing off in a helicopter to treat animals injured in snares or working out how to restock a national park with game for the predators.

BBC: Working Lives Kenya: Vet

Not content with rescuing animals in the UK, she developed the charity's work overseas, to help donkeys working in "desperate conditions" in some of the most impoverished communities in the world.

BBC: Sidmouth Donkey Sanctuary founder dies