Lukas is 6 months old. He's tall enough to get himself into all sorts of trouble--snatching bread off the countertops, stealing glasses off night stands, and lift his front paws onto the bed and wake a sleeping person but cares enough about my approval so that he is set to rights quickly and with a stern tone of voice.
He is not as gregarious as his Berner sister, Maya. She loves everyone and will quickly bound toward them whereas Luke prefers to observe from behind one of his trusted family members until he is sure.