• Built-in sounder, makes sound when bitten, effectively attract dogs' attention, relieve boredom and prevent destructive behavior• Unique hedgehog shape with dense cleaning spikes, massage gums and clean teeth while chewing, prevent dental calculus• Made of thickened TPR material, bite-resistant and wear-resistant, durable for long-term play• Soft material, safe and harmless to dogs' teeth and gums• Suitable for dog self-play and human-dog interaction, enhance the bond between owner and dog• Relieve dog anxiety, consume excess energy, keep dogs healthy and happy• Two color options, meet different aesthetic preferences• Easy to clean, reusable, suitable for indoor and outdoor play