Possible Clues:

• Secretary's individual letters, one in black and white?
• Zoo attraction
• Exotic animal seen in parts of Pennsylvania, briefly
• Head and tail of puma or other mammal
• SECOND PART OF 13
• Chinese native getting letters from father, briefly
• Mammal, giant or red
• Giant, red, Chinese mammal
• Giant mammal found in borders of Patagonia?
• Black and white animal