Best to share a philosophical point of view. There are green things everywhere on my planet, but nobody is allergic to them. Weeds are allowed to live in peace, and nobody picks on the poor dandelions. Bugs never come inside the buildings, and they don't bite or suck blood. Mice don't live in the houses of people who will be mean to them, and they certainly don't carry any diseases.
Natural selection is alive and well.
The animals hunt each other and some will die while others survive. There are domesticated animals, much like on Earth, but nobody raises animals to slaughter. All the animals that are used to feed people are fed only organic food and are free-range. Maple keys fall all year. It exsists in a demension parallel to our own.