**Pawstruck Natural Large Collagen Sticks for Dogs – Vet-Approved Long-Lasting Chew Treats with Glucosamine & Chondroitin – Healthy Alternative to Rawhide & Bully Sticks – 4 Pack – Packaging May Vary – Perfect for Strong Chewers & Joint Health Support**

My two tiny terrors are 13-lb chewing machines, and it's a Herculean task finding toys & chews that hold up to their teeth for more than an hour or two. We've tried wood & nylon bones, no-hide chews, ballistic fiber plush toys, etc.: everything is either destroyed immediately or else isn't healthy for them to ingest. I recently learned about collagen chews as a promising alternative and decided it was worth the higher price tag to try out.I settled on Pawstruck after some research but realised the day after ordering that I'd accidentally misjudged the size & gotten chews that would be WAY too big for my 13-lb Alaskan Klee Kai - no worries, my big dog can still enjoy those! But needing something for my small but mighty chewers, I went back to the drawing board & settled on these collagen springs. Long story short, my dogs are OBSESSED! They love these so much they even try to take them outside with them on potty breaks. I had only intended to let them share one at a time but had to break out a second one so they didn't fight over them.Best of all, a day later, these springs are still mostly intact, which is a miracle in our household! My mind is at ease knowing that the little bits they break off and eat are actually healthy for them, and the shape & size ensures they can happily chew without risk of accidentally swallowing them whole. These do get gummy after intense gnawing, but they didn't leave a mess behind on my couch, and the only smell I noticed was on my hands after my pups had brought their springs for me to hold while they chew.Overall, I am thrilled to have found a long-lasting teething treat that is good for my pets, and my pups are even happier than me about their new treats. The only downside is that these do cost more than I prefer spending on consumables for my pets. However, they are much slower to get eaten than anything else we've tried by a large measure, so it's worth the occasional investment. I am already looking to reorder so we don't run out for times when I need to keep my high-energy pups distracted & entertained! Even after only one day, I can confidently say I would recommend these to other owners of tough chewers.