Rather than being an agonistic display of territorial defense, urinary
scent marking by domestic dogs appears to be a means to make a strange environment smell like home, by masking the
unfamiliar odors with individual urine.
Kleiman (1966) in Behavioral Effects of Domestication volume 1, discusses how urine
marking may be used to secure an
unfamiliar place or object by rendering it familiar with the
scent.