Season 4
Episodes
1 Diego Reunites Hippo & Oxpecker Sep 28, 2009 
2 Diego's Orangutan Rescue Sep 29, 2009 
3 Where is Okapi's Brother? Sep 30, 2009 
4 Puffin Fish Adventure Oct 1, 2009 
5 Diego and Dora Help Baby Monarch Get to the Festival Nov 25, 2009 
6 All Aboard the Giant Panda Express! Mar 15, 2010 
7 Diego's Ringed Seal Rescue Feb 19, 2010 
8 Bengal Tiger Makes a Wish Mar 16, 2010 
9 Leaping Lemurs! Mar 17, 2010 
10 Diego Saves the Beavers Mar 18, 2010 
11 Ocean Animal Rescuer Apr 22, 2010 
12 Welcome Home, Lion Cub Jun 18, 2010 
13 Diego's International Rescue League Sep 24, 2010 
14 Diego Rescues Prince Vicuna Nov 5, 2010