Larger frogs are better mimics but are more risk-averse in a non-toxic poison frog

Aposematic species signal to potential predators with salient and recognisable colouration. Predators learn to associate these warning signals with secondary defences (e.g., toxins) and will subsequently avoid attacking aposematic prey. Warning signals can therefore reduce the need to hide and/or flee and alleviate some of the energetic/opportunity costs of predator avoidance. Consequently, aposematic species are frequently active and bold in behaviour. Batesian mimics replicate the colours, and often the behaviour, of aposematic species and may benefit from a similar reduction in predation risk and energetic/opportunity costs. Allobates zaparo (Aromobatidae) is a non-toxic Batesian mimic of the chemically defended poison frog *Ameerega bilinguis *(Dendrobatidae). However, the efficacy of mimicry appears to change throughout ontogeny as Al. zaparo develops from a seemingly cryptic juvenile to the mimetic adult. We examined how morphological mimicry (i.e., colour) and the propensity to e..., , # Data from: Larger frogs are better mimics but are more risk-averse in a non-toxic poison frog

Dataset DOI: [10.5061/dryad.905qfttxx](10.5061/dryad.905qfttxx)

## Description of the data and file structure

Here we include all the RAW behaviour data, the original RAW image and video files used in McEwen et al. *Larger frogs are better mimics but are more risk-averse in a non-toxic poison frog*. Published in *Behavioral Ecology*.

The video files (McEwen-etal-2025_BehaviourVideos.zip) include all experimental behavioural trials.

The images files (McEwen-etal-2025_FrogPhotos.zip) include all images used to quantify frog colouration and mimicry.

The behavioural data (McEwen-etal-2025_BehaviourData.csv) includes frog behavioural responses from each experimental trial and the processed visual modelling data. Data extracted from the video files (McEwen-etal-2025_BehaviourVideos.zip) and RAW image files (McEwen-etal-2025_FrogPhotos.zip).

Light environment data (McEwen-etal-2025_LightEnvir...,