Belle, the second sibling to be introduced, debuted on June 28, 1976. "I found my sister Belle ... and what a reunion we're having!" Charlie Brown reads from Snoopy's letter in a later strip.

Eggs Benedict for my brother, Spike!" Snoopy says. Belle, the second sibling to be introduced, debuted on June 28, 1976. "I found my sister Belle ...

In the 1970s, Spike and Belle were the two siblings that fans of the Peanuts comic strips were introduced to first. In the ...

Eggs Benedict for my brother, Spike!" Snoopy says. Belle, the second sibling to be introduced, debuted on June 28, 1976. "I found my sister Belle ...

Eggs Benedict for my brother, Spike!" Snoopy says. Belle, the second sibling to be introduced, debuted on June 28, 1976. "I found my sister Belle ...

Spike could understand at least 50 words, he said in 1983. This intelligence and cleverness made its way into Snoopy's character. The cartoon beagle " is a collector of fine art and a root beer ...

Eggs Benedict for my brother, Spike!" Snoopy says. Belle, the second sibling to be introduced, debuted on June 28, 1976. "I found my sister Belle ...

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.

Just two days later, Snoopy was introduced. Get to know the dog's breed and biography. On Oct. 2, 1950, "Peanuts" made its comic strip debut. ... Spike could understand at least 50 words, ...

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.

Just two days later, Snoopy was introduced. Get to know the dog's breed and biography. On Oct. 2, 1950, "Peanuts" made its comic strip debut. ... Spike could understand at least 50 words, ...

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.