This Old Seagull
It’s nice have some idea how old an animal might be when you encounter them. At the very least so you can know what conversations topics are appropriate around them.
Seagulls for example: I have seen some awfully mangy seagulls on Nantucket in the summer, but I don’t think I gave them enough credit for potentially being twenty-five years old.
This is a great useful chart, featured today by Information is Beautiful.