I also have a Care Credit card (http://www.carecredit.com/) which will allow me to pay the bill at the vet immediately, then I can just transfer the money between bank accounts (which takes a few days) so the Care Credit card is payed off before any interest accrues. At least one of our local vets also has a 'promissory note' payment scheme where you pay half when you pick up your pet then spreads the rest out over 3-4 months, that can come in handy too sometimes.
Thanks for the tip. I will ask my vet if he has any 'promissory note' scheme. That sounds good, and…yes it would come in handy!