The Summer heat can be especially tough on overweight pets, whose extra bulges are already putting them at risk for heart problems. So I'm breaking down steps to fight furry flab and ensure that our pets stay fit and fabulous throughout these tongue-lolling months! Earlier this week, we looked at how to figure out the ideal weight for your puss or pooch, but that's just the beginning. The next step is determining the number of calories your pet needs to consume each day, and for that we'll need to go back to school for some light math. As with any weight-loss plan (human or pet), consult your veterinarian before making any major changes to your pet's diet. Ready to continue the Summer shape-up? Then just keep reading.