Most English staffies go 12-14 years so I consider myself blessed she's gone nearly 16 given she started seizures a good 5 years ago.
I give her cartrophen injections every 4 weeks, paracetamol morning and night, green lip muscle extract daily, and I've just invested in an electric heat pad for her kennel. All to keep her as comfortable as possible.
When she goes I'll have her cremated and spread her ashes with mine when I die.
Adopted her in 2014, was an overweight and anxious breeding bitch. Has been the most amazing companion but I have less time for her now with 4 kids which is sad.