Compassion for animals is intimately associated with goodness of character, and it may be confidently asserted that he who is cruel to animals cannot be a good man.
It may not be the ultimate test of a person’s character, but you can easily observe much about a person by their interaction with animals.
I often see how people’s pets behave and you can gather a lot about a the owner. Pets look to us for care and compassion and give back way more than we give them a lot of the time. Most of what we call a bad animal is really a bad owner.