Complex sentence: Three well-developed scent glands are present, one on each side of the animal and one placed ventrally; the scent may be used for marking territories, though the shrew's sense of smell is thought to be poor.
Split into simpler sentences: Three well-developed scent glands are present, one on each side of the animal and one ventral. The scent may be used for marking territories, though the shrew's sense of smell is thought to be poor.