Therefore, it is best to take unproven breeding stock to proven mates — mature animals who have adult offspring that meet your criteria of quality. (ashgi.org)
This is much more common than the congenital type of the disease — especially in mature animals between 3 and 10 years of age, depending on their breed (large and giant breed dogs tend to become physically «older» at a younger age than their smaller counterparts). (petwave.com)
«The results highlight the disproportionate effect the hunting and poaching of mature animals might have for elephant populations.» (scientificamerican.com)