On Oct. 2, 1950, "Peanuts" made its comic strip debut. Just two days later, Snoopy was introduced. Get to know the dog's breed and biography.

Inside Snoopy Mania: Why the 74-Year-Old Beagle Is More Popular Than Ever, Especially at the Holidays (Exclusive) Charlie Brown's lovable Beagle was introduced in the third-ever 'Peanuts,' and he ...