All the dogs get salmon oil daily. The girls who are 8 get Mobile Bones which is a powder added to their food. We felt like they didn't recover from flyball as well last year and also seemed to struggle the next day after a long walk, so started them on this around March (we got a deal at Crufts!) and this year has been much better. Being Spaniels they run for the whole of the walk regardless of how long it is! We also run them over the little jumps at flyball and they often share a space in the team now
Tango is coming up 5 and he gets Glycoflex I as he does flyball and agility. He had a bit of lameness around May and the vet panicked me by mentioning arthritis. So I started the Glycoflex, but it cleared up anyway and I had him checked by a physio last month and no lasting issues so I think it was muscular
The reason I went for the Glycoflex with him was I liked the fact it came in 3 levels, so I can increase the strength if and when he needs it. He currently has one every other day.