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Every article on Frontiers is peer reviewed, permanently archived and free to read.

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Original Research
Published 2 October 2026
Abnormal ingestive behavior in male zoo gorillas: investigating the dietary and activity patterns associated with regurgitation and reingestion
Rhiannon L. Schultz · Isabella L. K. Clegg · Roberta Salmi
Frontiers in Ethology
doi 10.3389/fetho.2026.1896803
Mammal Science
Published 9 October 2023
Tool use, or not tool use, that is the question: is the necessity hypothesis really inconsequential for the African great apes?
Shelly Masi
Frontiers in Mammal Science
doi 10.3389/fmamm.2023.1281030