A person can change their opinions/feelings on animals for multiple reasons. For example, they can make friends with an animal or start a relationship that involves no communication (cause animals can't talk) but lots of love. Also, if the animal starts being friendly to the person, there's a high chance that the person may not take their love for granted.
One thing is their experience with a certain animal, for example, a person might love dogs, then one day, a wild dog bites that person and from that point on, they are afraid of dogs and don't want to be close to them.
Other reason can be that they saw a documentary on a certain animal and that changes their perception of said animal, for example, many people think that sharks are wild and vicious animal, but one day they watch a documentary about sharks and realize that, like dogs, sharks have different personalities and some even approach divers because they like to be petted.
Wife to Troy and mother of Cory, Rose represents the maternal gentleness of the Maxson household. In opposition to Troy's toughness and disrespect for Cory's feelings and opinions, Rose is a source of love and understanding.