Hey Ian! Woooohooooo! Thank you so much for the fantastic five-star rating and for sharing such wonderful feedback about our Deer Antler Dog Chews being perfect for BIG dogs - and we're absolutely thrilled that these whole antlers are keeping your large pups busy for hours! We're so excited to hear that you appreciate the difference between whole and split antlers, and that our HUGE deer antlers are delivering exactly the kind of long-lasting, safe chewing experience that big dogs need! There's something really special about knowing that our organic deer antlers not only provide hours of entertainment but also offer the superior durability and safety that comes from being whole rather than split - that's exactly the kind of premium chewing experience we hoped to create for large breed dogs! We love that you took the time to share how both the large and extra large sizes are working perfectly for your dogs and that these natural chews have earned such wonderful approval from your big pups! The fact that you can see the clear advantage of whole antlers over split ones just proves how much care and dedication we put into sourcing the highest quality deer antlers for our furry friends! We're so happy that our Deer Antler Dog Chews have brought such perfect satisfaction for your BIG dogs and that we've delivered the kind of safe, long-lasting chewing experience that keeps those powerful jaws happily occupied! Our main aim is to promote pet wellness, and we feel honored to be a part of your pets' path to health and happiness!