What pets are the easiest and the hardest to take care of?

Also using dog-cat answers:

1. What pet is the easiest to take care of? Cat
2. What pet is the hardest to take care of? Dog
3. What pet is the cheapest to take care of? Cat
4. What pet is the most expensive to take care of? Dog
5. What pet do you have so spend the most time on/with in order to take care of it? See Below
6. What pet can you spend least time on to take care of it? See Below
7. What pet is the laziest? Dog. Cats sleep a lot but are terribly energetic when they are awake, and they can go from zero to a hundred in an instant.
8. What pet is the most energetic? Cat
9. What pet is the #1 attention whore? Dog
10. What pet is #1 anti-social? Cat

5. Although you could get away with spending less time with a cat than with a dog, since cats will tolerate human indifference more than dogs will, in order to have a healthy and happy cat, I think you have to be there for it, particularly if you have only one cat. Plus, except for puppies, a dog will be content with lying at your feet while a cat wants to play. As long as they are healthy, cats continue to be playful. In fact, I had a twenty-three year-old cat with cancer who, even in the last day of her life, wanted to play.

6. For the sake of simply keeping the animal alive and healthy, that would be a cat, if only for the fact that a cat is easily litter-box trained, while a dog will need to go out doors. Plus, a cat can get enough exercise to remain healthy by running around indoors, while dogs need to be taken for walks.