She has slight trouble going up stairs in evening but at 13 we assumed aches and pains with old age or slight arthritis. For about a year now we have been giving her 'flexijoints' tablets + cod liver oil capsules. She otherwise up until this afternoon was quite lively and runs about on walks. She vomited today and then went quite quiet and lost appetite.
Yesterday she did eat what I think was part of a dead dear though she does eat a lot of rubbish when out for walks.
Generally healthy lively dog.