"Tybalt, the kinsmen to old Capulet, Hath sent a letter to his father's house" (2,4,7-8).
"A challenge on my life" (2,4,9).
Romeo, Benvolio and Mercutio in Verona
"Romeo will answer it"(2,4,10).
Romeo and Mercutio are talking and they get a letter from Tybalt.
"Alas, poor Romeo, he is already dead" (2,4,14-15).
"More than prince of cats" (2,4,20).
The idea of having a negative relationship between the two families is continued when Tybalt sends a letter saying he wants to fight Romeo. It is difficult for Tybalt to control his emotions as seen before at the Capulet party where his hate for Romeo first begun.
This demonstrates the motif of revenge since Tybalt is very upset about Romeo showing up to the Capulet party even though Romeo was well behaved and other Capulet members didn't mind him there.
Tybalt believes that fighting will solve this problem and he is called the "Prince of Cats" which means he is very skilled in fighting and cunning.