What do you call a group of tigers?  An ambush. What do you call a group of frogs? Bats? Racoons? Herrons? Ferrets?  Check out these cheeky cards and find out.  Intended for different occasions, congratulations, thinking of you, encouragement or just to make someone smile.  The "Collective Nouns" collection features two sets of 8 different notes each. Dimensions are 4.25 inches x 5.5 inches. Envelopes included. Logophiles and wordsmiths will love these. Sets are sold separately.