Indigestible chews like hard plastic or nylon chews: As a rule, any chew that is indigestible has a high chance of causing a gastrointestinal blockage or indigestion at the very least. Hard plastic or nylon dog chews are often too hard and can damage teeth. In addition, they develop rough edges when chewed that can cause injury. These toys are not digestible and cause GI obstruction or damage if eaten.
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