my 9 year old boxer has had terrible runs for the past two days and lost weight gradually over a period time. this morning i came downstairs to mess in kitchen and dog could not get up, when he did he could not stand on his back legs and when he walked he walked on his front legs with his back legs in the air. now he can walk but still trying to avoid putting weight on his back legs and to be honest he is trying ot avoid moving as he is currently laid on the carpet (dont think he can get on sofa). he has not lost his appetite though.
i have him booked in for vets later this morning and was wondering if anyone has any thoughts before i go ion what this is? i suspect he may have internal cancer but has anyone had experience of something like this wehre it has not been serious?
thanks