Next up to blame is the Eurasian Beaver.
https://en.wikipedia.org/wiki/Eurasian_beaver
And if that doesn’t work:
the Booby
https://en.wikipedia.org/wiki/Booby
But we know for sure it’s not...
the Little Bustards!
https://en.wikipedia.org/wiki/Little_bustard
Don’t be ignorant and READ!
99% DNA match.
Didn’t RATS spread a little bad disease too? hmmmmmmmmm