"Huge Fleas" on Carpet: Marine Amphipods?

Large flea-like bug
Dead bug on carpet

Two dead 1/4-inch sand/orange "fleas" on carpet. Dog-sitting recently. Wonders if dog brought them.

Not Fleas

Photo suggests marine amphipod (beach hopper/scud) — crustacean, not insect.

Need clearer photo. Could be other cricket/grasshopper nymph.

Dog unlikely source. Check location.

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