Environment and reproduction in seals.
D000367:Age Factors; D000818:Animals; D001835:Body Weight; D010872:Caniformia / Q000502:physiology*; D004777:Environment; D005260:Female; D006128:Growth; D008297:Male; D011156:Population Density; D011247:Pregnancy; D011792:Quebec; D012098:Reproduction; D012621:Seasons