I believe human brains undergo major rewiring during the teenage years. Does this also occur in other animals? A friend’s two-and-a-half-year-old horse seems to be showing “teenage” characteristics, repeatedly testing the boundaries of acceptable behaviour with the adults in the herd. It’s uncannily like my two teenage sons.
• Some aspects of growth and maturation are common to many species, and animals often have different characteristics in each stage of this process. For example, the bodies and behaviour of insect larvae are specialised for the accumulation and storage of nutrients, whereas adult insects, if they feed at all, do so…



