He felt a spasm of excitement because he knew instinctively who it was, or at least knew who it was he wanted it to be, and once you know what it is you want to be true, instinct is a very useful device for enabling you to know that it is.
He almost danced to the fridge, found the three least hairy things in it, put them on a plate and watched them intently for two minutes. Since they made no attempt to move within that time he called them breakfast and ate them.
He learned to communicate with birds and discovered their conversation was fantastically boring. It was all to do with windspeed, wingspans, power-to-weight ratios and a fair bit about berries.