Also, my first instinct in the first tree encounter was to click and drag the water can over the tree. I was disappointed to see I had to hit a menu.
There's a cat game that my little niece likes where you pet a cat using a little "rubbing" motion on the mouse. Would be nice to have that here. Brings more of a tactile quality to a game. Using menus all the time (especially for petting) introduces robot actions into what could be a more organic game.