I think it is an honour and a gift to be able to watch a healthy baby grow. To watch them achieve their goal stones. For kittens: I love the 6-7 week age when they trust you to help them learn to climb and jump, all the while Mummy cat is complaining at you for teaching her babies such 'Bad Habits'. This week, I made collars with each of our kittens names on them. The first kitten (Bruno) looked at me like "What you doing. What do you want." Once he realised, I was putting his collar on, his little chest puffed up and all the others jump on my lap for their collars. Each kitten then paraded around, chest out on tip toes, proud as can be.