Considering that he cubs spent some time in the den without a mother, as well as their extremely young age, we cannot exclude the risk of developing pneumonia, the symptoms of which do not appear immediately... One bear cub has a good appetite, the second one is more problematic - not every time he eats well.
Together with the wildlife experts from
http://wnh.vet/, we constantly monitor the state of the bear babies and, in case of deterioration of their health, we will start treating them.