It depends on how insecure they feel. Consult your vet to tips on how to avoid or minimize this problem. It is usually worse when you introduce an adult dog. Puppies are less of a problem.
he's marking his territory
You must first complete the current quests you're asked to complete, which is finding a den and marking your territory.
The best way to get your male and female chihuahuas from marking their territory is to have them neutered.
they have very little marking of their territory.
because there marking there territory
To your dog, you are his territory and he is marking you, making you "his".
By roaring and scent marking in its territory.
spraying / marking territory
Foxes mark their territory by urinating on objects and leaving scent marks. They also use their feces to mark their territory, known as "scat marking." This behavior helps them communicate with other foxes and establish their territory boundaries.
yes, territory is when she wants you seriously
By vocalizations and scent marking.
They're marking their territory.