I've got a 15yr old collieX she went to the vets last week as she's been drinking alot, and I mean loads, about 3 times what she normally drinks, and therefore waking us up to go for a wee in the night and weeing alot in the day. They've done blood tests for her liver and kidneys and a urine test for diabetes and they've all come back ok so they gave her some antibiotics and she's due to go back tomorrow evening. But the antibiotics haven't made any difference, does anyone know what else it could be? Could cancer do this? Its come on quickly over the last weeks or so.
I'd like to prepare myself as if the prognosis isn't good and she'll just get worse we'll probably have her put to sleep then, I don't want her to have to undergo invasive testing at her age. There are other things to, she's senile and partially blind and deaf but her worst problem is her arthritus, she can only manage short walks now, no stiles etc, although on good days she'll have a run with my younger dog, on bad days she's worn out after 15mins, more good than bad days at the mo but I know she hasn't got long left and I'm dreading the autumn when I know her arthritus will get worse as I don't want her to suffer, as she's always loved her walks.
Anyone any experience of what this could be so I can prepare myself for the worst when I see the vets tomorrow?