On reflection...perhaps a small amount of this planets skin will suffice for research purposes?
All three of my leg strudels are sore and stained with skin juices...blaysh!
I had managed to collect a small amount, picking at the individual strands of skin, when an earth dweller cantered up to me. He (an assumption based on the dwellers plumage) was a sprightly young quadruped with glistening jowls.
His attempts to communicate were fairly limited, and I am still trying to determine exactly what it is that this being wishes to tell me so desperately, however I have so far established that "ROWLF!" is a suitable and common greeting.