Compare differences between Mo, Lucky

Here’s how the multidimensional Mo and the digital dog Lucky compare:

Mo

Cost: $75, plus food, yearly license and vet bills.

Food: Kibble twice a day.

Poop happens: Whoever is walking him puts poop in a plastic bag and drops it in the trash.

Responsibility: Mom does the early morning walk, kids do the rest. With feeding and play time, it adds up to an hour or two each day.

Tactic to get parents to purchase: “We came up to our parents with a list of boy and girl dog names,” Molly said.

What he shouldn’t eat but does: Cell phone earpieces, flavored ChapStick, chewing gum.

Crazy antics: Races around the house when Molly and Alex get home from school, sometimes bonking into walls.

Tricks: “Can sit, stay and come,” Alex said.

Training tips: Encouragement, eye contact and Cheez Whiz.

Most lovable behavior: Snuggling, tug-of-war with squeaky football.

Lucky

Cost: $29.99 for the game, plus $129.99 for DS to play it on.

Food: Dry kibble that Arthur buys with virtual game money (each player starts with $1,000 in play money).

Poop happens: Using a stylus, Arthur moves digi-droppings into a bag.

Responsibility: Arthur pays for food, toys and other expenses with game money. To earn more, Lucky must win agility and flying-disc competitions. Arthur spends about an hour a day with Lucky.

Tactic to get parents to purchase: “I got (Mom) to try a demo of the game, and she loved it,” Arthur said.

What he shouldn’t eat but does: Garbage, which makes him sluggish.

Crazy antics: Wears 3-D glasses, waggles his bottom when he wants to be petted.

Tricks: Zips through tunnels and over teeter-totters in agility competitions.

Training tips: Arthur uses a stylus to get him to sit up or roll over.

Most lovable behavior: Rolling over and having Arthur rub his belly with the stylus.