Size comes first
A chew should be large enough that the puppy cannot swallow it whole or lodge it in the mouth. Replace items that become small, split, or develop pieces that can be removed.
Very hard is not always better
Objects that do not yield at all can damage teeth. Puppies vary in chewing power, so inspect both the product and your puppy’s technique rather than relying only on a marketing label.
Supervise the first sessions
Watch how the puppy uses a new item, how quickly it wears, and whether pieces come loose. Rotate textures so chewing remains useful without constant novelty.
What to avoid
Keep the response gentle.
Avoid cooked bones, very hard antlers, and any item your puppy can splinter or swallow.
Safety boundary
When to get more help.
Ask your veterinarian about appropriate chew hardness if your puppy has dental disease, broken teeth, or an unusual bite.