DEBUG (1-10): Cache is NOT active
DEBUG (1-10): try to retieve this url: https://erp.planetadosbichos.org/api/resource/Animais
DEBUG: wp_safe_remote_get to https://erp.planetadosbichos.org/api/resource/Animais
DEBUG: arguments: {"timeout":5}
DEBUG: error getting URL:cURL error 28: Connection timed out after 5001 milliseconds
DEBUG: use fallback2cache: 3
DEBUG: fallback2cache failed: no cached JSON found
DEBUG: no data received: check url of json-feed

EMPTY api-answer: No JSON received - is the API down? Check the URL you use in the shortcode!