Hmmmm -

Max (91 lbs)

$1500 in emergency vet and hospital bills in past 7 months
FrontLine about $40-$50 every six months
Heart Guard about $50 a year (don't have to treat in winter)
$40/month food(premium)
toys variable
toenail clipping about $60/year

Jake (44 lbs)
$400 in emergency vet bills this year, plus immunizations (can't remember price)
FrontLine about $40-$50 every six months
Heart Guard about $40 a year
$20/month food (premium)
grooming about $50/year (I clip his toenails)
toys variable

But - I can't put a price on the joy they've given me.

Edit - I forgot to mention boarding fees for miscellaneous trips. I would say we spend about $400 a year on boarding.