The first step is asking your veterinarian for a written, itemized estimate with a low and a high range, because every later decision about savings, insurance or a personal loan depends on knowing the real total.
A verbal quote such as "around two thousand" is a starting point, not a plan. Surgery bills are built from a dozen or more separate charges, and the gap between the low and high column can be $800 or more depending on how long anesthesia lasts and whether your dog needs an extra night of monitoring. With the itemized version in hand, you can see which parts are fixed, which depend on how the procedure goes, and which might be done more cheaply elsewhere. The high column is the safer number to plan a personal loan around, since it already includes the most likely extras.
Owners who start comparing stride loans before they have that paper often request too much or too little. Ask the front desk to email the estimate so you can read it at home, calmly, without a waiting room around you. Most practices update estimates within a day or two, and many will walk you through each line by phone. If you expect to look at stride financial or stridefi offers, keep the estimate handy, because the amount and the surgery date shape which personal loan term makes sense.