Clark is our crazy 3.5 month old fella

He is very rambunctious and loves biting his sister, we are hoping he will start to lose some of his shark teeth soon! Any tips on teething? We’ve tried carrots, frozen rags/t-shirts, and frozen toys. He truly doesn’t care for any of it longer than a few seconds. Our dog poppy, and our hands and feet, would appreciate any tips 😂