A string of hollow edible logs with a bell, hung on a chain. You fill the logs yourself with whatever the animal already likes, a piece of carrot, a herb, a pellet or two, and the puzzle is getting it out. The chain means it swings, which makes the job harder and the whole thing last longer.

The logs are made from edible wood with vegetable extracts and alfalfa, and made without honey, which is the detail that matters most here. Honey is the standard binder on small animal gnaws and it rules the whole category out for rabbits and guinea pigs, whose guts do not want the sugar. Without it, this one is fine for both. Two sizes: 26cm total length including chain and bell for the small, 31.5cm for the large.

• Edible wood with vegetable extracts and alfalfa
• Made without honey, so suitable for rabbits and guinea pigs
• Small 26cm total length, large 31.5cm, both including chain and bell
• Also suits medium sized parakeets and parrots

The logs come empty, and an unfilled one gets ignored. This is a delivery mechanism rather than a treat, so the enrichment depends entirely on what you put in and how hard you make it. Push food right to the back rather than balancing it in the mouth of the log, and change what goes in so the animal keeps checking. Given empty, it becomes another thing hanging in the cage.

Who it's for: rabbits, guinea pigs and medium parrots, and anyone whose pet solves a puzzle feeder in under a minute. A good way to slow down a food-motivated animal without reducing what it gets.