But when it comes to the many remarkable ways members of the animal kingdom keep in touch with each other, our overconfidence ... Image caption, Slugs’ trails can help the creatures find mates ...

Since then, there have been many discoveries of animals that can think: Chimpanzees can make tools and help each other, parrots can talk, newborn chicken can calculate, dolphins can recognize ...

Our planet is full of incredible animals, and new creatures are being discovered every year. The way that animals have adapted to survive is fascinating, with some developing close relationships ...