Our caller, 'Doctor Dog' explained that dogs don't differentiate between family and friends.

Do dogs from the same litter know they are related?

Planet Earth from space

What happens if Earth stops spinning?

Red chillis

Why did chillis evolve to become spicy?

A dog's ears being examined

Why are dogs' ears so sensitive?

A flock of chickens

Why do we call it 'chickening out'?

A bee

How do bees know where to fly?

Where-do-pigs-go-at-night

Where do pigs go at night?

Bare trees in autumn - does that mean we're losing oxygen?

Do Bare Trees Mean A Lack Of Oxygen?

Do Bees Know That They Are Going To Die After They Sting?

Does A Bee Know That It Is Going To Die When It Stings You?

The "Glorious Twelfth" Shooting Season Begins Today

Labour Calls For Review of Grouse Shooting Laws

Red forest ants

What's The Smallest Animal That Could Kill You?

Bags of fertiliser

Why Is Fertiliser Measured In Litres And Not Kilograms?

Daily Life In Warsaw

Why Does A Crow Dictate Distance?