Dogs, both male and female, do not have a physical structure that would allow them to "get stuck" inside another being in the way you are suggesting.
It's important to remember that:
* Dogs reproduce sexually. This means a male dog needs to deposit sperm into the female dog's reproductive system for fertilization to occur.
* This process does not involve any physical "sticking" or merging of bodies.
If you are trying to understand something about the reproductive process in dogs, I recommend doing some research on canine reproduction. There are many reputable sources online that can provide accurate and helpful information.
If you are curious about something else, please clarify your question and I will do my best to provide a helpful answer.