Food safety
Can dogs eat plain yoghurt?
Yes, but be careful
Small amounts of plain, unsweetened yoghurt suit some dogs. Never anything sweetened — check for xylitol.
How much
A spoonful
Being honest about this
Dogs differ, and amount matters — a crumb of something rich is not the same as half a packet. Treats of any kind should stay under a tenth of what your dog eats in a day. If you're unsure, your vet would far rather take the call.