There is a fee, it goes to the person who processes your transaction (a bitcoin "miner"). Dogecoin has the same thing. It was likely not free for you to send

There is a fee, it goes to the person who processes your transaction (a bitcoin "miner"). Dogecoin has the same thing. It was likely not free for you to send those coins (unless it was an off-chain transfer via a hosted wallet [think transferring money between checking accounts at USBANK])