The ruthless usually (dislike, dislikes) taking care of animals.

RUTHLESS is closest in meaning tovindictiveflamboyantconciliatoryopulent

However, all writers about them, from Romans to modern zookeepers, decry their ________ temper and their nasty habit of biting people.Source: Guns, Germs, and Steel: The Fates of Human Societiespropheticirasciblemaritimeauditory

Write your own persuasive paragraph on the following topic: It is cruel to keep animals as pets.

at least one example of how irresponsible pet ownership can harm a pet

The first veterinarians focused on treating:ALivestockBFish and sea lifeCWild animalsDHousehold pets