The bear chases the dog. The dog needs the bear. The squirrel needs the dog. If something needs the squirrel then the squirrel likes the dog. If something needs the dog then the dog is blue. If something chases the squirrel then it does not need the dog. If something is big then it chases the dog. If something does not chase the squirrel then it is big. If the squirrel does not like the dog then the dog likes the bear.
The squirrel does not need the dog.