When it comes to leaving food bowls in puppy crates at night, there is a debate as to whether it is safe or not. While leaving food in the crate can be beneficial for puppies if they wake up hungry in the middle of the night, some experts suggest that it can also lead to behavior issues such as resource guarding. It's important to consider these factors before deciding whether or not to leave food in the crate. Additionally, it's important to ensure that the food bowl is securely fastened and that the puppy cannot tip it over or knock it over, as this could lead to messes and potential health hazards.