Who says plants and animals have no feelings?
Scientists have found that cows who have names (and thus treated like individuals) produce more milk.
Similarly, the nalca (or pangue) plant, photographed in Chilean Patagonia here, can be eaten-- but it tastes bitter if the stalk is cut with a knife. If, however, you break it with your bare hands, it tastes sweet.
So, keep on playing classical music for your plants and showering your pets with love. They might not tell you how much they like it, but it makes a difference.