I have the same problem, maybe use references? Or if you have the animal as a pet, take a photo of them in that pose, or just draw them Also start with basic shapes, and work your way up

Well, theres a certain flow that nature has thats not like striaght legs and all, also tails like that indicate threat and stiff legs are a challenge to opponents, draw in a more relaxed, springy style with bended legs, curved backs and drooped necks