Includes themes of animal cruelty and animal experimentation, but also teamwork and freedom.
Lots of creepy, dark imagery, only occasionally lightened with humor. A scary and dramatic sword fight between rats with a little blood that results in the death of one rat. Two bad rats plot to kill a main character and make it look like an accident; they are successful. Mrs. Brisby's children are in great peril and almost drown in the mud. Rats, as well as dogs, cats, and monkeys, are subjected to scientific experiments including a scene of an injection in a flashback. A big spider crawls toward Mrs. Brisby before it's crushed by a giant owl. Characters eyes glow and might appear scary to some.
The crow talkes about "looking for a lady" and "making a love nest." Some flirtation between a male and female crow.
Drinking, Drugs & Smoking
The rats drug the cat on occasion to make it sleep.