This is a post I made on another forum today.......and I am to lazy to re-word it for this forum, Sorry.
I have found that there is a period of "Roughly" 90'ish days after cubs have been driven off by their mother so that she can come into estrous (Heat); Where the cubs will be crying and advance toward me. It is my "opinion" that these young bears are not aggressive, but lonely.
They just want what they had with their "bonded" family unit. They are scared and very lonely. Sadly this behavior is highly fatal for cubs, they will be killed by male bears (which the lonely cubs will walk right up to) and eaten. This lonely and lost behavior by clueless cubs is miss-understood by humans who interpret this strange behaviors aggression or rabies (the reason for the humans behavior is that they start from being fearful of bears.
The cub in the photo, with huge ears is a classic example. I have had several cubs (Over the last 45 years) walk right up to with-in 3 or 4 feet and start eating grass and wild flowers. And when I get bored and walk away......most times they will follow me.
I think there are more cubs killed by boars for this behavior, than are killed under the generally accepted theory of infanticide to bring the sows into estrous cycle.