Kraft Foods Inc., Northfield, Ill., has a new  Lunchables contest of planetary proportions. In doing so, the brand also is rolling out four more Lunchables sub sandwiches.

Kraft is teaming up with Animal Planet and Jeff Corwin in a "Lunch, Roar & Score" sweepstakes. Through May 3, 2010, kids can enter for a chance to win an all-expenses-paid trip to Boston with their family where they'll spend three days with Jeff Corwin, learning about their favorite animals. Entering is easy – simply log onto and answer an animal-themed trivia question.  Ten winners and their families will get a behind-the-scenes tour of the New England Aquarium and Franklin Park Zoo as well as an exclusive welcome dinner with Jeff Corwin.

"We believe all kids have the potential to do great things," said Darin Dugan, senior director of marketing, Lunchables. "The Lunch, Roar & Score Sweepstakes really focuses on an interest we know kids want to learn more about – animals – so we're excited to provide this opportunity which is exciting and educational."

Kraft says moms also can feed their kids' potential with new Lunchables sub sandwiches. Starting in January, four new varieties hit shelves featuring bread made with whole grain, 100 percent white meat chicken and turkey made with 100 percent turkey breast. The new Lunchables varieties are available in the refrigerated section of grocery stores and retail for $1.99. 

New varieties include:

Turkey + Cheddar
Turkey made with 100 percent turkey breast, Kraft 2% Cheddar and bread made with whole grain, these tasty subs come with Tree Top® Applesauce, Mini Nilla Wafers, spring water and Tropical Punch Kool-Aid Singles.

Ham + American
Lean ham, Kraft 2% American and bread made with whole grain. This lunch combination also features Sugar-Free Jell-O, Chewy Chips Ahoy! Cookies, spring water and Tropical Punch Kool-Aid Singles.