(Seen on various posts about dogs/alleged "bully breeds"/etc.)
"Dogs don't become viscous overnight."
I certainly hope not. That would be disgusting and, to be honest, rather disturbing. Not to mention that once you report this to the authorities, the CDC will quickly quarantine your area, and the government is likely to nuke the hell out of your happy town to prevent the spread of whatever contagion caused your dog to become viscous.
*Vicious, and you're welcome.