Help me keep my dog through threat of homelessness

Hi I'm Douglas and I have just received a notice to quit my house as my landlord is selling the property I've lived in last 6 years and I have until August to move out and I am currently a joint tennant with my sister with mental health problems and mobility issues.

I have contacted my local council for advise and such and put myself on housing register but they are being not very helpful in this situation and they said that they will not house us with the dog they are trying to make us re-home him as they won't accept dogs in emergency accomodation.

He was originally a rescue dog we adopted to help my sister with her anxiety and depression

Please help us gain enough funds to go for a private house as we can't give up our dog he is family please help us keep out Toby boy with us in our loving home