This sounds like a tough situation. The fact that there was not a contract signed works against you as much as it works for you.Contracts are a parting-shot opportunity to share their philosophy, advice, and expectations about the dog they are entrusting to you. Fortunately, my breeder did not have me sign such a deal. It depends on the sequence of events, it depends on how you came to find this breeder and what, if anything, the breeder's website says about breeding rights. Most dogs that successfully complete the 120-day program qualify to be dual-purpose dogs that either patrol and sniff out explosives or patrol and detect drugs. I bought 2 pups from out of state and didn't sign any contracts. (b) No person shall engage in the business of leasing or renting a dog. Honestly, I am very tempted to foster fail with this dog.