Right after Brooke and George put the gold kerchief on Stuart's shirt and before the troopmaster apologises to Mr Little for mocking Stuart, Stuart's kerchief is red. However, after Mrs Little says "That's our little man", Stuart's kerchief becomes gold again.
Even though the Beast is depicted as a cougar, she has roaring and growling sound effects from Panthera cats (tiger, lion, and jaguar). Cougars are more related to smaller cats (subfamily Felinae).
At the end of the 2nd movie, Mrs. Little stopped being overprotective of Stuart. But in this movie, she was still overprotective of him.