Let me introduce you to Millie, my beloved 13 year old Jack Russell. I got her for my 17th birthday as a puppy, which makes me 30 (this week)
Millie is one of the sweetest little dogs you'll ever meet, she has such a lovely nature and everybody that meets her say's she isn't like most dogs, she's almost human like. In the 13 years I've had her she has always been by my side, through good times and bad... just her presence alone has a massive impact. So she is a very special dog, as Im sure all your babies are to you all.
I have recently found she has a brain tumour. This was discovered after her first seizure two weeks ago, which was so heartbreaking to witness... I instantly took her to the vets, who ran some blood work to check for diabetes/glucose levels... this came back normal, she then had more blood taken to test for insulin levels to see if there was a growth on her pancreas.
So a week later all was well, and I was praying it could just be a one off... but no, poor Millie had her second seizure, which left her mouth twitching/chewing, which I wasn't happy about leaving, I took her back to vets... she said there wasn't much to do until the results came back, but either way not looking good as it was slowly ruling everything treatable out. When asked about the twitching, she told me it was a normal after affect to the seizure. Not being content with that answer I looked it up and apparently they were in fact petite mal seizures. Well, later that night, Millie had another big seizure, which was so awful, she was practically perpendicular and I had to administer a rectal tube of Valium. She came out of the that and I rushed her back to the vets, who broke the news of the results... they all came back normal which has basically limited the cause coming from the brain, a tumour :'( I am absolutely devastated!
I have been prescribed Prednisolone to take away any inflammation in her brain which I;m hoping will prevent further seizures, although I have read about them having some nasty side effects in themselves.
They said these will just prolong her life for a bit, but it will get progressively worse and then we might want to think about putting her to sleep

I am beside myself, I'm trying not to be upset around Millie as I know they pick up on this.. but it's heartbreaking to see her deteriorate. Since the last big seizure, I have noticed differences in her, such as pacing and doing things slightly out of her character. I know this is going to get worse and I can't bear that... she is my world, I have no children yet and so I see her like my baby in a way. I just want to take all this away from her

I know I still have her at the moment, but I feel a sense of despair, and desperate... I don't know, it's like I'm hoping for somebody to miraculously make it all better and take the pain. I know this isn't possible and am trying to enjoy whatever time is left.
I would love to hear from any of you, whether you have a dog who has suffered from anything similar or just some words of comfort. These are very sad days. I'm not going to work so that I can stay with her, and I don't feel I can leave her in case anything happens whilst I'm not there.
Once again thank you for taking the time to read this and I look forward to meeting others who know how painful this is!