Dream about being bitten by a koala is sadly a warning alert for feelings of guilt and low self-esteem. You are not being yourself. You are trying to reduce the affect of a negative situation. This is a metaphor for some pent up anger that is on the verge of erupting. You are not being completely honest in some situation.
Being bitten by a koala dream stands for feelings of vulnerability or a fragile state in your life. You need to better direct your feelings and express it in a healthy way. There is a situation where you just need to grin and bear it. This sadly draws attention to undeveloped aspects of yourself that you are ignoring or refusing to confront. You may be trying to learn from previous mistakes or relive the good and bad times.
If you dreamt about being bitten by a koala:
A minor conflict with a romantic partner in the morning is likely to end with a tearful reunion and much reassurance by mid-afternoon. The end of the day could find the two of you planning a romantic trip abroad, even down to the restaurants you want to try! Discussions of spiritual or psychic matters could also bring you closer together. All in all, it’s a tumultuous but romantic day.