What substance connects:

1. and other such creatures
2. 

(The connect is very direct - don’t overthink this one :) )

Cracked by Logik, Raghuvansh, Thejas V R, varuns88, byslexia, Dibyo, Ananth, Siddharth Jain, Anubhav, Shwetha Maiya, Qbrain, Bharath, Sumanth Patlolla, madhur, dineshk, shrik, udupendra, shenoyvarun86, Kaiser Soze, lanu, Rogi and Rahulk