No. The word "viscous" means thick or syrupy. Wouldn't apply to a dog. If you mean "vicious", probably so, as any dog can be made vicious by training or poor treatment or a combination of both.
If the cop wasn’t beating the homeowner or the dog it would be pretty darn hard to get a Golden to be in vicious mood. Darn near impossible to my thinking.
If I was training a dog for attack duties, I’d pick a Yorkie before a Golden.