In LBT 8: The Big Freeze, Ducky claimed that she "did not know how to be mad". This is not true, in the previous films there were times that she got mad. Here are some examples...
* In the first film, when she found Spike's egg, the top started cracking making a "crack circle" and Spike peaked his eye through a hole and saw Ducky and moved his head back. Then Ducky got mad and flung the top off being tired of waiting.
* Then there's LBT 5 The Mysterious Island, when at night Ducky said to Spike that she would miss Littlefoot, Cera, and Petrie but not Spike because he was still with her, then Petrie appeared and sayed something (I don't remember what, though) and Ducky got mad and sayed "Then maybe I won't miss you either"
* In LBT 6 The Secret of Saurus Rock, when the gang was crossing the log, Ducky pointed out that if she fell it would be a long fall, then Petrie said that there was a river down there and she'd probably fall in it and since she's a swimmer she can swim out and find a way up. Then Ducky sarcasticly said she felt "so much better"
* Also in LBT 6, she got mad at Cera when she told Dinah and Dana to get lost.
* She even got mad in LBT 8! The film where she stated that quote. She got mad when Spike ate her tree stars, which was before Cera taught her to be mad.