Nice job on your quick sketches and solid chalks, mariearroyo, nevertheless, I've got one smaller idea: See that 60 second (not minute) animal above, really like how you rendered that rear leg on that one, despite being a bit ambiguous and sorta-not-too cluttered to look at. Why do you consult these links on this website HereAnd Here, then sketch one of them, in 10 minutes, pretty, pretty, pretty, pretty if you please, please, please, please???? And do want to really, really know why????? It's so it'll give you the greatest of benefits of rendering you hooved animal anatomies. Suppose it'll be supportive and beneficial.
Yours Truly