The following video is part of our "Motley Fool Conversations" series, in which industrials editor/analyst Isaac Pino and research analyst Catherine Baab-Muguira discuss topics across the investing world.

In today's edition, Isaac and Cat sound off on Wal-Mart, the world's largest retailer, and Caterpillar, the largest heavy equipment manufacturer. Both companies dominate on their home turf in America, but the catalyst for growth lies abroad. Allegations of bribery cast a dark shadow over Wal-Mart's Mexico operation, which the company once held up as a model for international expansion. Meanwhile, Caterpillar is trying to bulldoze its way into a Chinese market that is proving tough to penetrate. Which company offers better prospects for your portfolio? Check out the video below to hear the case for each Dow stock.

Dow companies continue to eye emerging markets for growth, and Caterpillar and Wal-Mart are no exception. However, there are three other companies whose international growth stories we're particularly bullish on. If the trend continues, investors could be looking at internationally fueled new stock highs. Uncover them in our special free report: "3 Companies Set to Dominate the World." The report won't be available forever, so we invite you to enjoy a free copy today. You can access it by clicking here. Enjoy, and Fool on!

Catherine Baab-Muguira has no positions in the stocks mentioned above. Isaac Pino has no positions in the stocks mentioned above. The Motley Fool has no positions in the stocks mentioned above. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.