BSM1
What? Me worry?
Actually they do. Male lions are very protective of their cubs. They kill the cubs of other males if they can take over a pride, but they will defend the cubs they father. They also defend the cubs of another male in the pride. Often a large pride will have more than one adult male, usually brothers, protecting the pride and fathering cubs. Lions are very cooperative.
Xanda could very well have been tagged as Cecil's cub, now grown. Sub-adult males are driven out of the pride by males and females and form bachelor groups until they form their own pride. It's the sub-adults that invade and try to take over a pride, drive out the dominant male, and kill his cubs to bring the lioness(es) into heat. Then they father a new generation. Depending on the age of the erstwhile dominant male, the youngsters may succeed, or not. It's savage but fascinating.
Btw, housecats' behavior is identical. A tom will kill the kittens of another tom and breed with the female (queen). But he will fiercely defend his own kittens. Different genera and species of the big and little cats, but their behaviors and physiology are virtually identical.
Okay...but I'm sure we both can agree that the lion made a fine rug.