{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,17]],"date-time":"2026-10-17T07:58:41Z","timestamp":1792223921224,"version":"4.4.0"},"reference-count":171,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2026,7,23]],"date-time":"2026-07-23T00:00:00Z","timestamp":1784764800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Neurorobot."],"abstract":"<jats:p>Quadruped robots have attracted increasing attention because they can traverse uneven terrain, support field deployment, and perform tasks that are difficult for wheeled or tracked platforms. Recent advances in artificial intelligence (AI) have further expanded their capabilities from manually designed gait control toward learning-based locomotion, perception-aware adaptation, dynamic motion skills, autonomous recovery, manipulation, energy-aware operation, fault diagnosis, and human\u2013robot interaction. However, the literature on AI-driven quadruped robotics is distributed across diverse technical topics, robot platforms, validation settings, and performance metrics, making it difficult to assess the maturity and practical value of different approaches. To address this need, this review provides an AI-centered and deployment-oriented overview of quadruped robotics. A systematic literature search was conducted using Web of Science, IEEE Xplore, ACM Digital Library, ScienceDirect, and SpringerLink, covering studies published approximately from 2000 to 2025. After screening and eligibility assessment, 287 studies were included for detailed review. The review first examines AI-driven locomotion, including reinforcement learning, non-RL machine-learning methods, model-based approaches, and hybrid strategies, with attention to robustness, sim-to-real transfer, sensor use, computational requirements, and hardware validation. It then summarizes AI-supported advanced behaviors, including jumping, fall prevention and recovery, and object manipulation, focusing on reported quantitative performance, impact management, and reliability. Finally, it discusses system-level topics that affect real-world deployment, including fault diagnosis, energy-efficient control, shared autonomy, trust-aware and explainable interaction, and safety-aware human\u2013robot collaboration. By organizing the literature according to robot capabilities, validation maturity, and deployment challenges, this review helps clarify the current progress, limitations, and future directions of AI-driven quadruped robots.<\/jats:p>","DOI":"10.3389\/fnbot.2026.1855550","type":"journal-article","created":{"date-parts":[[2026,7,23]],"date-time":"2026-07-23T05:40:40Z","timestamp":1784785240000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":1,"title":["AI-driven quadruped robots: from fundamental locomotion to advanced biomimetic behaviors"],"prefix":"10.3389","volume":"20","author":[{"given":"Likai","family":"Wu","sequence":"first","affiliation":[{"name":"Department of Electrical Engineering, Faculty of Engineering, Universiti Malaya, Lembah Pantai","place":["Kuala Lumpur, Malaysia"]},{"name":"School of Electrical Engineering, Shandong Huayu University of Technology","place":["Dezhou, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chee-Onn","family":"Chow","sequence":"additional","affiliation":[{"name":"Department of Electrical Engineering, Faculty of Engineering, Universiti Malaya, Lembah Pantai","place":["Kuala Lumpur, Malaysia"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wei Ru","family":"Wong","sequence":"additional","affiliation":[{"name":"Department of Electrical Engineering, Faculty of Engineering, Universiti Malaya, Lembah Pantai","place":["Kuala Lumpur, Malaysia"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Joon Huang","family":"Chuah","sequence":"additional","affiliation":[{"name":"Department of Electrical Engineering, Faculty of Engineering, Universiti Malaya, Lembah Pantai","place":["Kuala Lumpur, Malaysia"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jeevan","family":"Kanesan","sequence":"additional","affiliation":[{"name":"Department of Electrical Engineering, Faculty of Engineering, Universiti Malaya, Lembah Pantai","place":["Kuala Lumpur, Malaysia"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Meina","family":"Zhang","sequence":"additional","affiliation":[{"name":"Department of Naval Architecture and Ocean Engineering, Pusan National University","place":["Busan, Republic of Korea"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1965","published-online":{"date-parts":[[2026,7,23]]},"reference":[{"key":"B1","first-page":"403","article-title":"\u201cLegged locomotion in challenging terrains using egocentric vision,\u201d","volume-title":"Conference on Robot Learning","author":"Agarwal","year":"2023"},{"key":"B2","doi-asserted-by":"publisher","DOI":"10.48550\/arXiv.2204.01691","article-title":"Do as I can, not as I say: Grounding language in robotic affordances","author":"Ahn","year":"2022","journal-title":"arXiv"},{"key":"B3","first-page":"5717","article-title":"\u201cPedipulate: Enabling manipulation skills using a quadruped robot's leg,\u201d","author":"Arm","year":"2024"},{"key":"B4","doi-asserted-by":"publisher","first-page":"5734","DOI":"10.1109\/IROS.2015.7354191","article-title":"\u201cReactive trotting with foot placement corrections through visual pattern classification,\u201d","author":"Barasuol","year":"2015","journal-title":"2015 IEEE\/RSJ International Conference on Intelligent Robots and Systems (IROS)"},{"key":"B5","doi-asserted-by":"crossref","first-page":"2693","DOI":"10.1109\/IROS40897.2019.8967995","article-title":"\u201cTraining in task space to speed up and guide reinforcement learning,\u201d","volume-title":"2019 IEEE\/RSJ International Conference on Intelligent Robots and Systems (IROS)","author":"Bellegarda","year":"2019"},{"key":"B6","doi-asserted-by":"publisher","first-page":"12547","DOI":"10.1109\/LRA.2022.3218167","article-title":"CPG-RL: Learning central pattern generators for quadruped locomotion","volume":"7","author":"Bellegarda","year":"2022","journal-title":"IEEE Robot. 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