Here's why:
* The "tie": Dogs often "tie" after mating, which can last for 15-30 minutes. This is not about pleasure, it's a biological mechanism to ensure the sperm has a chance to travel to the female's reproductive system. A shorter time may not be long enough for this to happen.
* Sperm survival: Even if sperm reaches the female, it only survives in her body for a limited time.
* Ovulation: A female dog needs to be in heat (ovulating) for pregnancy to occur.
In short: While it's not completely impossible, a 5-minute encounter is very unlikely to result in pregnancy.
Important note: It's crucial to consult with a veterinarian for accurate information and advice about canine reproductive health.