uhmm... that mordu ভালুক that merida's father was talking about... was it the ভালুক he just killed when merida was still young?? অথবা was it different??

Mordu was the oldest outta all the three Princes from the other kingdom and he was turned into a phantom ভালুক after he let pride, selfishness and anger get the better of him and those three elements have been keeping him alive for many years. And the ভালুক that attacked Merida's father was just a minor character ভালুক pretty much.

the person above me is incorrect. King Fergus literally calls the ভালুক at the beginning Mor'Du. Mor'Du ate Fergus' leg and obviously Fergus was unable to kill him. It is the same bear. He's kept alive দ্বারা magic. So to answer your question, yes, it is the same bear, but your প্রশ্ন is erroneous because Fergus did not kill him.