Just because he mated with her does not mean all her cubs are his. Also, it's far more likely that brown bears attack females whose cubs are of other male bears (bears recognise each other and males seem to have a preference for females with whom they haven't already mated). Additionally, males usually stand down when confronted by a defensive mother bear. So, the situation you're describing, even with the parameters you've set, is very unlikely.

Exactly!! I re-read it several times thinking I must be drunk and I was not reading it correctly!!! 😂

That same drunk person makes a lot of the titles here on KZbin!