Animals are used for labor everywhere. Maybe I'm desensitized to it due too the amount of Amish in my area but horses still pull wagons, oxens still plow fields, dogs still pull sleds and herd animals, etc.

There are literally clams (or oysters, I forget) that work as relays in what I believe is a water treatment plant. Depending on water quality they open or shut their shells, which activates the relay which triggers some other automated action.

Animal abuse is wrong, sure, but the concept of animals performing work isn't inherently new and is still used in most parts of the world, even the modern countries.

Also, PETA sucks. Another organization that sounds good on paper and at a glance, would be good to support, but it's littered with scandals.