🐶 Dog Simulator: Sunny Garden - Puppy Care, Fetch Ballistics, Kleiber Energy and Training Lab

Care for a golden puppy in a sunny garden: feed, walk, play fetch with drag-and-bounce ball physics, groom, bathe and train tricks. Needs follow Kleiber energy scaling and Rescorla-Wagner learning, with a throw-angle lab that compares RK4 flight to the closed form.