It is truly heartbreaking to hear about the suffering that the dog has endured at the hands of humans. Animals are incredibly resilient and can still show affection and trust even after experiencing trauma and pain. The fact that the dog crawled onto your lap and found comfort there indicates that he recognizes your kindness and feels safe in your presence.
Your compassion and care for this dog can make a significant difference in his life. Providing a safe and loving environment can help him heal emotionally and physically. If you have the means and resources, consider taking him to a veterinarian for a thorough check-up and to address any medical issues resulting from the mistreatment.
If you are in a position to adopt or foster the dog, it could be a life-changing decision for both of you. However, if that's not possible, you may want to consider reaching out to local animal rescue organizations or animal shelters that can provide the dog with the care and support he needs.
Remember, your actions are making a positive impact on this dog's life, and by showing him love and compassion, you're helping him on his journey to recovery and a happier life. Thank you for caring and being there for him during this difficult time.