Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to breed yorkies [title] Determine if your yorkie is old enough to breed. [step] A female yorkie should not be used for breeding until she is 2 years old. A male yorkie will generally have viable sperm when he is over a year old.

Ending1: A female yorkie will be 4 times her age, and a male yorkie is less mature by 2 years old. [substeps] Male yorkies are four years of age and have a tendency to experience babies born after 3-6 months of age. Ending2: [title] Assess whether your dog has the right physical traits for breeding. [step] Does your dog have desirable breed traits? Does it meet breed standard minimums? According to the american kennel club a yorkie should exhibit these traits : [substeps] The yorkie's body should be compact and well proportioned. Ending3: Also, you will want to make sure your yorkie is young enough to breed. [substeps] A female yorkie should not be bred until you have moved into a bigger community that has dogs. Ending4: An older yorkie needs only the calf and 50% of the sperm from sire dogs. [substeps] You need a breed 8 or higher ready-to-breed starter to learn about breeding puppies.

Answer format: ending1/ending2/ending3/ending4