My shnauzer dog was in heat a couple months ago, and was outside when another shnauzer just showed up in our yard and they started well, going at it haha. Meanwhile, she's pregnant, and today is her 62nd day . Technically, she should give birth tomorrow, but I won't be home all day. She's been scratching things like blankets and the carpet, and I really want her to have the puppies today so I'm with her! Does anyone know a sure sign that a dog's in labor? Thanks so much!