I'm hoping it's not a side-effect of the Doxycycline she was prescribed for her symptoms accompanying her cough, because she still has the cough and there are a few days to go.
On the other hand, it may be an unwanted effect of the Previcox she's taking as pain relief after her surgery last Thursday. I'll ring the vet hospital tomorrow and ask if it seems reasonable to stop giving her this drug, seeing she seems to be comfortable and the wound is healing well. I notice that vomiting is a common side effect.
I guess it's one advantage of having an 'edible forest garden', which involves having lots of plants and not fussing too much about so-called 'weeds' - there is plenty of grass for Penny to graze.
I have in the past tried to see which grasses Penny likes to eat when she's not well, sometimes without much success, but this time I definitely saw her trying out panic veldt grass, because when she came inside she had a seed stalk stuck in her teeth, lol. (Apologies for the blurry photo.)