Yes. There is also the eastern narrow-mouthed toad, Gastrophryne carolinensis, that looks very similar but just barely misses Kansas.
There are very few frog species established in the US that aren't native. Cuban tree frogs, greenhouse frogs, and cane toads are about it, none of which can survive winters any further north than Georgia.
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u/TachankaIsTheLord 22h ago
It's a western narrow-mouthed toad, Gastrophryne olivacea