Tarantula in 1000 Years

My animal is a Goliath-Bird Eating Tarantula that eats mice, lizards, frogs, snakes, and birds. In the future, it will grow a backbone and an endoskeleton, so now it has a jaw and teeth to chew its food. To drink water it uses its long tongue to lap water into its mouth. It breathes in from its mouth into its lungs and then right back out. For making shelter, its claws dig burrows to keep them safe. It will keep over 50 out of 100 babies in its burrow. If predators come, it might make a tunnel out of its burrow and cover the top so they don’t see the spider. It sheds by scratching itself with its leg and it can grow its 10 legs back by resting up. This spider is going to have a backbone, endoskeleton, and 10 legs.