Season 1
5 episodes
Stretched to the Limit ~ 1
January 29, 2013
A Curious Hoax? ~ 2
February 05, 2013
Young Wrinklies ~ 3
February 12, 2013
A Curious Twist ~ 4
February 19, 2013
Seeing the Pattern ~ 5
February 26, 2013
Season 2
10 episodes
Virgin Birth ~ 1
February 18, 2014
Armoured Animals ~ 2
February 18, 2014
Life in the Dark ~ 3
February 25, 2014
Curious Imposters ~ 4
February 25, 2014
Bad Reputations ~ 5
March 04, 2014
Season 3
6 episodes
Impossible Feats ~ 1
February 02, 2015
Curious Minds ~ 2
February 09, 2015
Expandable Bodies ~ 3
February 16, 2015
Curious Feeders ~ 4
February 23, 2015
Curious Cures ~ 5
March 02, 2015
Season 4
6 episodes
Animal Frankensteins ~ 1
June 11, 2017
Finding the Way ~ 2
June 11, 2017
Extreme Babies ~ 3
June 18, 2017
Curious Counters ~ 4
June 18, 2017
Incredible Shells ~ 5
June 25, 2017