Followup questions: 1. Are cubs born in the den?
2. When does breeding happen?
3. What is the earliest age that a sow can be bred?

I'm assuming the answer to 1. is yes. I'm also assuming that the answer to 3. would be 1+ (after their first winter).

This would lead me to conclude that the sow in the pic is at least 2 years old, hard for me to understand her being that small. Comments?