Different pets require different levels of care and attention. While a fish, turtle, or even cat is A-OK for hours on end, dogs need attention, affection, and, of course, bathroom breaks. If both parents work, will you have a walker come to the house in the middle of the day? How about if you get stuck at the office late? If your family travels frequently, a reliable (and available) pet sitter is essential.
Source: American Kennel Club