When selecting animal speakers, prioritize Bluetooth 5.0 or higher for stable connectivity and lower power consumption. Pay close attention to the driver size (typically 33mm to 40mm) and output power (3W to 5W) to ensure sound clarity despite the small form factor. For portable use, ensure the battery capacity is at least 300mAh to 500mAh, providing 4-6 hours of continuous playtime. Additionally, verify the TWS (True Wireless Stereo) function, which allows two speakers to pair for a stereo experience, a highly sought-after feature for retail bundles.