How is the following passage from a compare-and-contrast essay organized?

dogs ands cats actually have a lot in common. one of the most obvious similarities is their general existence as pets. in other words, they are both domesticated. also, they both have fur. whether they have long or short hair, or scruffy or soft hair, dogs and cats both have coats to maintain.

by chronological order

point by point

subject by subject

by order of importance