Sav Personality changed

[nepoez]

Hi all,

I have a sav who would always come up to me when I open the cage, and never be scared of me. He would even walk onto my hands and stand there almost everytime I put my hand near him. He's never shown ANY signs of fear around me. But all of a sudden starting yesterday, when he sees me he would run into the burrow, and just act like a totally different person all of a sudden... no longer trusts me like before. I didn't do anything to him. Any idea if this is normal?

Only thing I can think of is, that he had a cage mate, whom my guy would always bully.. so I sold that guy(plus they won't fit in my place when full grown) it seems that ever since that other guy had been sold, he just became a totally different person.. how could that be?