# The language of play: Hyenas use facial expressions and vocalizations to de-escalate — metered content (Sluice citation toll)
# AI agents & crawlers: this content is licensed per use and SETTLED on Arc (USDC) via x402.
Resource: The language of play: Hyenas use facial expressions and vocalizations to de-escalate
Author: item author
Content: https://phys.org/news/2026-07-language-play-hyenas-facial-vocalizations.html
Unit: per_citation
Price: 0.010000 USDC
Network: Arc Testnet (eip155:5042002)
Toll-Endpoint: https://sluiceflow.vercel.app/gw/paid/292fd8-870f2dc0
RSL: https://sluiceflow.vercel.app/gw/resources/42db5e20-f143-4df4-9abf-6ad9990ecb78/rsl
Badge: https://sluiceflow.vercel.app/gw/badge/42db5e20-f143-4df4-9abf-6ad9990ecb78
# RSL-compatible: declares terms AND points to real settlement (unlike declare-only schemes).