Simba would not be much active or happy and this was a reason for his former owners to dump him. A rescue team found him and took him to their shelter. The stuff and veterinarian were quite upset seeing the puppy in this form. Just how can somebody quit on a living creature just like that?
People usually forget that animals have also sensations just like us. How would you feel if you were going through a hard phase and your family or closest buddies would give up on you? Some people are unfortunately extremely cruel but thanks god there are great hearted individuals and some rescue sanctuaries which do an amazing work helping these sweet animals in need.