Can a chihuahua get pregnat if she is not in heat
no, and if you don't know anything about breeding, don't think about breeding your dog. Its harmful to the future puppies and the mother dog and could even result in death. Spay and neuter your pets to keep them the safest!
NO, a male dog should not Tie with her unless she is in heat, and a female will not "except" the male dog to mount her unless she is in heat.