hei thank you so much!! Best thing is and i know this anwser annoys people sometimes is to practice and be ok with sucking for a long time. Try to find good pins on pinterest of animals in action when they sleep, play hunt.... Watch documentaries pause video and try to capture animal. Firs i usually draw gesture line of an animal then i add structure to it. Practice gesture drawings quick sketches of animals just to get the feeling in your hand. And gradually you will be able to do more and more complex poses 
And if you have schoolism subscription i would reccomend Terryl Whitlach class, where she teaches you how to draw animals and then "stich" them into creatures Its a fun journey and you need to love the process aswell even tho it can be very very stressful. Gl!
