For example - how would you handle an overpopulation by a toddlers? Would you set them free into the wild or euthanize? This is an incoherent analogy brought a

For example - how would you handle an overpopulation by a toddlers? Would you set them free into the wild or euthanize? This is an incoherent analogy brought about by anthropomorphizing non-human creatures, and were it followed through on it would do immeasurable harm to the very creatures you wish to protect. To take the example of pills versus spaying/neutering (so, in your analogy, these hordes of toddlers can reproduce), you assume that their owners would universally be responsible enough to and capable of administering the pill, and that those who were not sufficiently responsible would do something other than abandon the animal when it began menstruating (in the case of a female dog or cat) or behaving in a sexually aggressive manner (in the case of a male). Then you assert that giving them "rights" would induce people to behave well, presumably under the threat of punishment. This might actually result in a similar situation to toddlers -- forbidden to leave the house or go out of sight of their owners, forbidden to play in potentially dangerous situations, and a variety of other consequences that would be terrible for cats or dogs because they are not human and to treat them equivalently is cruel to the animal.