Dreaming of adopting a cat is a kind of warning as per dream interpretation and meaning. It means in near future you will be cheated by someone taking advantage of your goodness. It also means someone very cunning will attempt to cheat you, try to steal your wealth or take advantage of you sexually.
Adopting a cat and it scratching you or attacking you means you will react or act without thinking in near future and it will be suicidal. This will cause problems in relationships and it will also hurt you physically.
After seeing the dream of adopting a cat and it running away means you need to be careful about the action of other people. Avoid making any kind of commitments. For a period of time it is better to keep yourself low.
After dreaming of adopting a cat and it destroying things means you need to be careful with all kinds of romance matters. Be prepared to hear something worst or see something you did not want to see.