Most importantly...$$$ should be a primary area of concern for the what if's that WILL come up and usually when you least expect them! So, my best suggestion is have ample savings set aside for each of your furkids plus, a good pet insurance policy for each one! Even with pet insurance, you will more than likely have to pay for services in full and then bill your insurance and wait to be reimbursed 30 days later for covered expenses...not to mention your monthly premiums.
I have 24petwatch coverage for my girls and have found them to cover even many hereditary conditions Yorkies are prone to have
**(as long as they have never been diagnosed before the policy goes into effect!)** Dog Insurance from 24Petwatch Pet Insurance