Dogs may choose to sleep with the people or other animals that they feel most comfortable and bonded with. This can vary depending on factors such as the dog’s personality, past experiences, and the relationships they have formed with different individuals or animals in their environment.

Dogs are social animals and they thrive on human and animal companionship. It’s not uncommon for dogs to seek out their human family members or other pets in the household for comfort and warmth, especially during the night when the house is quiet and everyone is sleeping.
Some dogs may have a strong preference for sleeping with one particular person or pet, while others may be more flexible and switch up their sleeping companions from night to night. Factors that may influence a dog’s choice of sleeping partner include their level of attachment to different individuals, the amount of attention and affection they receive from each person, and how comfortable they feel in each person’s presence.
It’s worth noting that while dogs may choose to sleep with certain individuals, it’s important to ensure that the sleeping arrangements are safe and comfortable for both the dog and the human. This may involve providing a comfortable and appropriately sized sleeping space for the dog, as well as establishing clear boundaries to ensure that everyone can rest peacefully throughout the night.