Most long-lasting chews get there through toughness of material — rawhide, antler, horn. This one gets there a different way: it's a hard cheese, and a dog has to slowly soften and wear through it rather than crack it.

Made from milk and milk derivatives (99.9%) with lime juice and salt added to harden it, this extra large piece is suitable for dogs from 4 months and can be microwaved briefly to give a different, crunchier texture. Analysed, it's 59.2% protein and only 5.2% fat.

• Extra large size, single piece
• 99.9% milk and milk derivatives, plus lime juice and salt
• Protein 59.2%, fat 5.2%, fibre 0.1%, moisture 13%, ash 6%, calcium 1.5%
• Gluten-free
• Suitable for dogs from 4 months
• Can be microwaved to change the texture

On the fat figure. At 5.2% fat against 59.2% protein, this is unusually lean for a chew this dense — most hard chews of a similar size and duration carry more fat than this. It's still a dairy product though, so it isn't the choice for a dog with a genuine dairy intolerance, whatever the fat content says.

Who it's for: owners of dogs over 4 months old, comfortable feeding a dairy-based chew, wanting something that lasts as long as an antler or horn without being quite as hard on the jaw.