Where to Find and Catch Palpitoad
From Pokemon Go Wiki
Palpitoad are found and captured in Nest and Habitat locations.
Nests
Palpitoad Nests are locations that consistently spawn Palpitoad.
Habitats
Palpitoad Habitats are spawn locations where Palpitoad is likely to be encountered, but not guaranteed the way a Nest is.
Additional Tips and Information
Best Nests
If you know a really good nest or any of the nests above is really good, list them here: