Glossary
Materials, without the costume
Short definitions we will keep pointing at from the guides. If a product page uses one of these words, this is the version we mean — limits included.
Natural rubber
A harvest from rubber trees (Hevea brasiliensis), not a synthetic tire blend. It is renewable and, in a thick toy, genuinely tough. It is also latex. Households with a latex allergy should treat it as a contact risk for people, not just a dog story. “Biodegradable rubber” still does not mean a toy will politely vanish in a landfill. Heat, oils, and a determined chewer age it. Retire it when it cracks, pits, or pieces come off.
Zogoflex
West Paw’s trade name for a recyclable thermoplastic elastomer used in one-piece toys. It is not a plant. It is not biodegradable. The environmental case is durability plus a take-back route: West Paw’s Join the Pack program has accepted worn Zogoflex toys for recycling. Check the current rules before you mail anything — programs change. For power chewers, a long-lived recyclable toy often beats a “natural” toy that becomes weekly trash.
Hemp
A bast fiber that grows quickly and, compared with conventional cotton, usually needs less pesticide. In dog gear it shows up as leashes, collars, and rope toys. The fiber can be strong and a little rough; weave and stitching decide whether it is pleasant in the hand. Rope toys are a swallowing hazard once they fray — strings and guts do not mix. Hemp is not automatically certified organic; ask which standard, if any, the mill used.
rPET (recycled polyester)
Polyester made from recycled bottles or other PET. Using it can cut demand for virgin plastic and keep bottles in play a little longer. It does not biodegrade. Washed rPET fabrics can shed microfibers like other synthetics. Fine for a leash or a toy shell when the spec is honest. Not a reason to buy a plush toy your dog will gut on day one.
GOTS
The Global Organic Textile Standard. It covers organic fiber content and a list of processing limits, including some chemical and social criteria, for textiles. It is not a dog-product seal and it does not grade chew toys. A GOTS cotton collar is a meaningful textile claim. A hangtag that just says “organic” with no standard is not.
ASTM D6400
A U.S. specification for plastics designed to compost in municipal or industrial aerobic composting facilities. Passing it — often alongside a logo from a certifier such as BPI — means the material was tested to break down under those hot, managed conditions, and to leave no harmful residues at the levels the spec cares about. It does not mean the item breaks down in a backyard bin, in the ocean, or in a landfill. It also does not mean a facility will accept the item once it is full of dog feces.
EN 13432
The European cousin of the industrial-compostable plastic spec. Same idea: a packaging or bag claim tied to industrial composting conditions, not to a ditch behind the dog park. If a brand cites it, look for a certifier, not just the number printed in leaf-green ink.
Stainless steel
The quiet winner for bowls and some hardware. It does not depend on a biodegradability story. It survives the dishwasher, does not stain the way plastic does, and can be recycled as metal when it finally dies. Weigh the bowl so a enthusiastic drinker does not skate it across the kitchen. For collars and leashes, stainless or solid brass hardware usually outlasts the pretty coating on cheap alloy clips.
“Bamboo” composites
Solid bamboo is a grass and a reasonable handle or board. Molded “bamboo fiber” bowls and plates are often a powder bound with plastic, sometimes melamine resin. That is not a tree-free miracle; it is a composite that can wear, and melamine is the wrong thing to heat or to market as simple bamboo. If a dog bowl is feather-light and printed with leaves, assume you need the material spec, not the illustration.
Wool
A durable, renewable fiber for beds and some toys. It regulates temperature and can be aired instead of washed constantly. It is not vegan, and cheap wool felt on a toy still fails if the toy is stuffed with something your dog will eat. Look for a cover you can remove. Moth holes are a house problem, not a moral one.