Calcium oxalate (39%) and struvite (33%) were the predominant mineral types
in canine nephroliths submitted to the Minnesota Urolith Center. Urate sal
ts (12%,) and calcium phosphate (2%) occurred less frequently. Provided the
y are not causing obstruction, struvite nephroliths may be dissolved with m
edical protocols. Although there are no dissolution protocols for nephrolit
hs containing calcium, risk-benefit ratios should be considered before proc
eeding with surgery.