Your (estate!) car develops a deep litter arrangement of dog beds, towels, fleeces, muzzles, poo bags, dog treats, spare leads, water bowls, spare towels, spare dog beds and so on that would be of interest to Time Team. Glove compartment has more poo bags, dog treats and baby wipes.
YOu spend hours on the internet looking at collar porn/um, essential equipment for your dogs. 
Your vet's number is on speed dial on all phones.
Your garage is full of sacks of kibble.
You develop an unhealthy and definately pathological interest in their poo.
When other people look at property porn in Sunday supplements they look at gracious drawing room, elegant proportions. You imagine extra sofas for sighthounds, and paddocks for greyhound play dates.
You spend more money on dog walking stuff than any other part of your wardrobe - ruefully stares at large collection of boots, fleeces, waterproofs, gilets, jackets etc for all climatic conditions while vaguely remembering past life of interest in accessories, high heels and actually NOT MISSING IT.