The phrase "small puddle" refers to a small pool of water usually found on the ground after it has rained or water has collected in a small area. Full definition
A spraying cat will stand, lift its tail and quiver, then spray small puddles of urine in several consistent locations (see Figure 1). (www2.vet.cornell.edu)
They take advantage of water gathered in small puddles and containers in people's yards or roofs. (treehugger.com)
I felt like I was on a different planet, the rock was covered in pitted holes filled with water from all the recent rain, and other smaller puddles reflecting the sky, it was picture perfect. (helloitsloh.com)