Episodes of crying

Also rare, a chance of crying would occur. Here's all the segments with crying.

Season 1
Episode 5 Wall-E-Nator: After Oscar says "Shut up, kid."

Episode 19 The Reading Womb: After the baby comes out.

Season 2
Episode 29 Kung Fu Blander: After Po takes one of the penguins.

Episode 37 Demise of the Planet of the Apes: While Dora says "I'll miss you, Boots."

Episode 42 Twilight: Staking Dawn: From both Edward and Bella Swan fans.

Season 3
Episode 57 Modern Family Circus: After getting hit in the head by a baseball.

Trivia
There was more crying in Season 2.