Season 4

Doug hires a dog walker to get Arthur out of the house.

Doug thinks he has come up with the perfect birthday gift for Carrie: laser eye surgery. That is until Carrie ends up nearly blind from the operation.

Doug is about to break the record at his company for the highest number of consecutive deliveries, while Carrie begins to question her decision not to play with Arthur in his annual senior center scrabble tournament.

Doug has a little fender bender with Deacon and Kelly's car.

Doug goes with Carrie on her company retreat while Arthur is left to fend for himself at home.

Arthur gets tricked by Doug's spooky Halloween decorations and lands in the hospital.

When Doug accompanies Arthur to the hospital for his angioplasty surgery, Doug bumps into one of his regular delivery customers who is going in for his own medical checkup.

Doug and Carrie set up a "Nanny-Cam" to keep an eye on Arthur.

While cleaning out the Heffernan freezer, Carrie comes across the top tier of her and Doug's wedding cake, and reflects back to the time when they got married.

After Doug has the wrong knee-jerk reaction after a rough airplane landing and he tries to save himself instead of Carrie, he must prove to her that he would take a bullet for her.

Carrie asks Doug to be an expert witness at her boss' trial but then doubts her decision.

Doug is having difficulty taking advantage of Carrie's fertile time with his parents staying at their house.

Carrie gets jealous when Spence's new girlfriend, Becky, recruits Doug to test her homework for the Culinary Institute.

Doug and Deacon's planned office excursion is doubly disappointing when no one shows up except their irritating boss, and Kelly leaves Deacon moments before they're supposed to leave.

When Doug agrees to accompany the recently separated Deacon for a night of clubbing, hoping it will snap Deacon out of his depression, Doug is the one who becomes addicted to the night life.

Doug and Carrie sneak off to New Orleans after promising Doug's cousins they wouldn't go without them.

When Carrie's firm has its annual outing at an exclusive country club, Carrie and Doug need to find a compatible couple to go as their guests.

When Doug's uncle offers to financially back Doug's dream of owning a sandwich shop, Carrie becomes concerned.

When Carrie goes on a business trip, Doug winds up acting like a teenager again when his parents visit and take over the house.

Doug knows he's onto a good thing when he notices that Carrie lets him go off his diet and binge after she has drinks with a friend following work.

When Carrie starts wearing her hair in a bun, Doug tries to figure out how he's going to tell her that he hates her new look.

When Doug and Carrie's accountant make them feel guilty about their lack of charitable donations, they decide to give a large amount of money to an elementary school library.

When Doug and Deacon win five thousand dollars in a gambling pool, Doug tries to keep his winnings a secret from Carrie, who didn't want him betting in the first place.

Doug believes that his new dentist, who once had a crush on Carrie, is hurting him on purpose.

When Carrie and Arthur's constant bickering begins to spiral out of control, Doug and Carrie decide it's time to send Arthur to a psychiatrist.