Tasty, crunchy, banana treat for small animals – suitable for rabbits, guinea pigs, hamsters, gerbils, rats & mice Tasty, crunchy, banana treat for small animals – suitable for rabbits, guinea pigs, hamsters, gerbils, rats & mice. Mr Johnson’s Niblets are a range of delicious, nutritious treats for small animals, blended from a variety of wholesome ingredients that are loved by small animals. They can be sprinkled on their food, fed from the hand or from a separate dish. Treats should be fed in moderation in order to ensure your pet doesn’t become overweight.