Guides

• Cosequin or green-lipped mussel? What is behind the best-known name on the joint shelf

  Cosequin is one of the most searched joint brands. What is in the tablet, why we list it but do not rate it, and which ingredients do have an amount you can check a product against.

  Oct 19, 2026

• Flexadin and UC-II. What 40 milligrams of collagen can do, and what the trials support

  UC-II is the one joint ingredient not given per kilogram. What is behind it, why the evidence is positive and still thin, and how Flexadin Advanced and Dr. Hölter Pro Agility reach the amount.

  Oct 19, 2026

• Label glossary. The terms on a German feed pack, with worked examples

  Additives per kg, dry matter, crude ash, CFU: what the terms on a label mean, which of them state an amount, and how to turn them into a figure per serving.

  Oct 19, 2026

• Zylkène and alpha-casozepine. Tested in cats, barely in dogs

  Zylkène is the best-known brand for unfamiliar situations. What is in the capsule, which trial supports the amount, why the evidence differs so much between cats and dogs, and which strength suits which weight.

  Oct 19, 2026

• Joints in dogs. Which ingredients hold up, and which do not

  The biggest category on the shelf, and the one with the most disappointed expectations. What the evidence supports for green-lipped mussel, omega-3, glucosamine, MSM and UC-II, and how to judge a pack in thirty seconds.

  Oct 1, 2026 · last checked Oct 13, 2026

• Calming supplements for dogs. What they can do, and what training has to do

  L-tryptophan, L-theanine and valerian in figures: where there is a reference amount per kilogram and where there is not, how long an effect takes, and why expectations of a fireworks-night product are usually too high.

  Aug 6, 2026 · last checked Oct 5, 2026

• Hairballs in cats. What malt paste does, and what a brush does

  The smallest category and the one with the clearest order: brush before paste. What is in a malt paste, why we do not rate its amount, and when retching is no longer about hair.

  Oct 1, 2026

• Skin and coat. Why almost every product does the same thing

  Omega-3 carries the category; biotin and zinc stand beside it almost everywhere. Why we rate no amount for those two, what a seasonal moult has to do with it, and how to spot an oil you can actually calculate with.

  Oct 1, 2026

• The immune system. The vaguest claim on the shelf

  "Strengthens the defences" appears on products with nothing in common. What sits behind it, which ingredient can be calculated at all, and why we treat this category soberly on purpose.

  Oct 1, 2026

• How to turn a label figure into an amount for your pet

  Almost every reference figure is per kilogram of body weight, and almost every label is per serving. Three steps that make them comparable, and the four places it goes wrong.

  Jul 9, 2026 · last checked Sep 30, 2026

• Joints in cats. What data exists, and what follows from it

  There are far fewer studies in cats than in dogs, and most products are derived from the dog. Which reference amounts we use, why they are less certain, and how to spot a product actually meant for cats.

  Jul 28, 2026 · last checked Sep 30, 2026

• Omega-3 for dogs and cats. Why only EPA and DHA count

  The bottle says oil, the arithmetic runs on EPA and DHA. How much per kilogram makes sense, why plant-based linseed oil delivers something different from fish oil, and how to tell when an oil has gone off.

  Jul 17, 2026 · last checked Sep 30, 2026

• Probiotics for dogs and cats. Why CFU cannot be compared with milligrams

  Probiotics are dosed in colony-forming units, not milligrams. What that means for comparing products, the usual order of magnitude, and why prebiotics often sit alongside them.

  Sep 1, 2026 · last checked Sep 30, 2026

• Taurine for cats. When it is needed and when you can skip it

  Complete food covers a cat's taurine requirement. Supplementing becomes relevant with home-cooked and raw diets. The amounts in common use, and why cooking lowers the content.

  Aug 27, 2026 · last checked Sep 30, 2026

• Teeth in dogs and cats. What a powder can do, and what it cannot

  The seaweed in the bowl has been studied, but it does not replace dental care. What the trial actually measured, why the amount is rarely on the pack, and how to spot a usable product.

  Sep 30, 2026

• Urinary health in cats. The emergency check first, the supplement second

  Water intake beats any powder. What the evidence on cranberry and D-mannose supports, why we no longer rate amounts there, and the one sign that means a vet right now.

  Aug 19, 2026 · last checked Sep 30, 2026

• Green-lipped mussel for dogs. What is in it, how much it takes, what to look for

  The best-researched joint ingredient for dogs. The dose per kilogram, the difference between powder, tablets and chews, and how to recognise a product that is honestly dosed.

  Sep 4, 2026