As most can see from the episodes, all the Canroids have roots in a core medal combo.
Taka and Jujaku-Tajador (or Tajadol as I'm seeing over the internet)
Batta-Gatakiriba
Tako and Unagi-Shauta (am I the only one that thought it was 'ShOuta' combo at first?)
Gorilla-Sagohzo
Petra and Tricera-Putotyra or Putotyrannosaurus combo.
I think we might be seeing more based on the Scorpion cell medal that Date flips every now and then. So
Spoiler
Don't induce the masses like that
Be advised that there is no real truth behind my words, only assumptions.