I've recently started feeding my Veiled hornworms and have noticed him getting extremely aggressive. I've been feeding him them for about a week now and would just like to know because for most of the time I have had him he has been very friendly and very easy to handle. Now even trying to get him out of his enclosure to clean it is a challenge because he will bite and hiss whenever anyone gets near him. He is about a year old now give or take but I know he is sexually mature so could it just be his natural instincts kicking in?