How does Bruno's behaviour indicate that animals too have emotions, affection, memory and individual traits of character?

This question relates to "The Bond Love":

Bruno is a bear that was found in the field by the author of the story who gives it to his wife. Both take great affection as Bruno grows. Despite being a wild animal, the bear is kind and playful with the family and even the other pets that live with it. After a while, Bruno is sent to the zoo leaving the author's wife and Bruno very sad. After three months, the wife visits Bruno at the zoo and the feeling of happiness of both is incomparable. This demonstrates that animals also have feelings, emotions and deep bonds with those who care for them and treat them well. Animals do not forget those they have loved and especially those who have given love.

At the end, she got permission to take Bruno back home.