From time to time your Avdi will sit in a corner and stare at nothing. He will cease to respond to outside stimuli, and may curl up into a ball. There is nothing to be concerned about, he is merely moping. It’s not the result of anything you’ve done. The condition will go away naturally with the passage of time. However, there are a few things you can do to make it more bearable for him.
First of all, realize that it’s not your fault. Also realize that he’s probably feeling lonely and unreachable, no matter how many people who love him are around. Understand that nothing you can do can change this feeling. Try not to be offended by this fact – if you are, it’ll just make him feel guilty for feeling the way he does.
The trick to caring for a moping Avdi is to make him feel noticed without requiring a response or putting him on the spot. For god’s sake do not try to make him “snap out of it”. Saying “smile”, “go dance”, or tickling him are certain to fail to achieve their desired result. Also, as much as you may want to, don’t focus your full attention on him or try to engage him in conversation. This will just make hime feel indebted and obligated to make himself respond, no matter how painful it may be to do so.
Instead, when you happen to pass by him, give him a hug, or wrap an arm around him. If you’re having a conversation with someone, sit next to him and play with his hair, or just hold his hand. Since he’s probably feeling pretty worthless, complements can help, particulaly on shallow aspects such as his appearence which don’t make him feel like he has to then make an effort to live up to the complement. Distractions are good too. If you’re going to go somewhere or do something else, and you don’t mind his mopey presence, grab his hand and say “come with me”, and let him tag quietly along. Just don’t require him to make decisions. A mopey Avdi is safe to introduce to new people; he won’t bite and it may be just the stimulus needed to snap him out of it, at least temporarily.
The general idea is to make him feel wanted and noticed without feeling as if he’s asking too much from you.