Answer:
Weight in my belly, trees on my back, nails in my ribs, feet I do lack. What am I?
I go up and down at the same time. Up towards to sky and down towards the ground
I am the kind of dog that chases anything red. What am I?
Where did the baseball keep its lemonade?
I am of several different kinds, but the one you pick doesn't do its job. What am I?
No matter how little or how much you use me, you change me every month.