First Apperance of  Superpets

Ace the Bat-Hound Star Spangled Comics #100 (1/50); Batman #92, 6/55

Beppo the Supermonkey Superboy #76, 8/59

Comet the Superhorse Adventure Comics #293, 2/62

Cosmo (Challengers Spacepet) Challengers of the Unknown #18, 9-10/60

Krypto the Super Dog Adventure Comics #210, 3/55

Legion of Super Pets Adventure Comics #293, 2/62

Proty II Adventure Comics #316 , 1/64

Rang-A-Tang the Wonder Dog Blue Ribbon Comics #1, 11/39

Streak the Wonder Dog Green Lantern #30, 2-3/48

Streaky the Super Cat Action Comics #261, 2/60

Wolf (Boy Commandos mascot) Boy Commandos #34, 7-8/49