Simba is 6 months old and we've had him about 4 weeks. At first, he would happily be picked up and sit on our lap and enjoy being stroked but the past few days, he has been really hard to catch and very restless when we try and hold him. Should we not pick him up if he is running about the cage when we try? I fear we would never be able to get him if this is the case. Basically, is it OK to pick them up even if they are trying to run away?