A rodent that weighs a few ounce against a terrier that is capable of punching far,far,far above a terriers weight,as they are often expected to do,yep a lightweight rodent is the test of many a second rate terrier and comes far,far,far easier to any half decent terrier,seriously an 8 ounce rodent is supposed to be a tester for a terrier?. when you get rats in big numbers matey,yes it is a test.Ratting dogs get bitten to f**k when there are numbers like this involved and for them to keep on working through the pain then I think it is a test,but that's only my opinion.maybe you need to give yo