Episode Title:Quillber's Birthday Present.Episode Description:It's Aviva's birthday, and Chris and Martin decide to collect shed porcupine quills to make a beautiful necklace as a gift. As they tag along with an African crested porcupine, they discover that animals have different ways and even some highly specialized features to defend themselves from predators. For example, porcupine quills are modified hairs, designed by nature into a deadly defense. However, Zach ties balloons to many animals which then float up to his jet. The Kratt Brothers must use the porcupine's amazing defense from their Creature Power Suits to protect the porcupines from Zach's latest animal collection scheme and rescue the animals Zach had captured.