This is an endearing trait and should not be confused with growling. Akita's have a strong prey drive, and even though it may have been raised with the family cat, other small animals will be considered prey. Because Akita's are inherently aggressive to other animals, they should not be allowed to roam freely or be off leash. Nor should an Akita be tied up outside for an extended period of time as this increases their level of aggression. Not all Akita's like children, even if they're raised with them.
Dogs react differently to young kids.
Dominant dogs such as the Akita, treat children under the age of 12 years old as subordinates. Akita's do not like to be teased and may respond by biting. These children should be kept away from an Akita whose large size and hunting instincts can endanger the child's life. Akita's can be very food possessive. If you have other pets or small children, you will want to make sure that the Akita receives its food or treats well away from the other animals, and that no one is allowed near the Akita until the food is gone.