Interesting concept. I got really confused with the scaling mechanic though. I'm not sure if I am a fan of scaling objects by zooming in/out and not sure if I did that correctly, but it didn't shrink the houses all the time for me. When there are strict and specific house sizes/types the list which animal lives where shouldn't be hidden in the tutorial, but visible all the time.
Nonetheless it's a charming and relaxing game :)