Communication with pets is two-way: pets must be able to react to human expressions and behaviour, and vice versa. But we are severely limited in this latter respect, not least (unlike cats, dogs and horses, for instance) in the immobility of our ears. So Daedalus is experimenting with a special cap equipped with large, electromagnetically adjustable ears, which should allow its wearer to become much closer emotionally to any animal that uses ear signals.