y OK, 0 rows affected (0.12 sec)

CREATE DEFINER=`root`@`localhost` TRIGGER IF NOT EXISTS increment_animal
 AFTER INSERT ON animals FOR EACH ROW
  UPDATE animal_count SET animal_count.animals = animal_count.animals+1;
Query OK, 0 rows affected, 1 warning (0.00 sec)

SHOW WARNINGS;
+-------+------+------------------------+
| Level | Code | Message                |
+-------+------+------------------------+
| Note  | 1359 | Trigger already exists |
+-------+------+------------------------+
1 row in set (0.00 sec)

URL: https://mariadb.com/kb/en/create-trigger/https://mariadb.com/kb/en/create-trigger/