How Much Should Newborn Kittens Weigh?

by Naomi Millburn, Demand Media
    Breed type may affect a newborn kitten's birth weight.

    Breed type may affect a newborn kitten's birth weight.

    The image of a newborn kitten is a sweet one indeed. Just one glance at a tiny and fluffy feline ball of joy may be able to soften even the hardest of hearts, even just for a second. At birth, wee kittens don't usually even weigh in at 4 ounces.

    Weight

    According to the ASPCA, kittens typically weigh approximately 3.5 ounces right at birth. However, this weight may vary depending on a few different factors, namely the number of kittens in the litter and the specific breed type. Some cats are simply bigger than others, often even from the start -- think the Savannah, for instance.

    Fast Growth

    Although kitties start out as tiny little creatures, the initial several weeks of their lives are all about rapid growth and development. It's not unusual for a kitten's weight to multiply in just a span of a couple of weeks. While a kitten is nursing with her mama cat, expect weight gain of a maximum of half an ounce each day. This type of reliable and consistent weight gain is a sign of a thriving youngster.

    Weight Monitoring

    The Humane Society of Otter Tail County indicates that by the second week of a kitten's life, she should be up to about 7 ounces in weight. By the third week, expect her to weigh in at a hardy and healthy 10 ounces, then at 13 ounces the following week. Around the fourth week, a mama cat often begins weaning her litter and slowly steering them away from nursing. Around the fifth week, your little one should tip the scales at roughly 1 full pound.

    Feeding

    Never attempt to feed a newborn kitten solid foods in an attempt to get her to gain weight. The only nourishment a kitten needs in the first weeks of her young life comes directly from her mother -- milk. The mother cat's milk is ideal for fulfilling a kitty's very specific dietary requirements. Of course, if the mother isn't around, you may opt to bottle-feed a kitten using formula and a kitten milk replacer (KMR). Never offer a kitten -- or adult cat, for that matter -- milk from a cow, as it can lead to digestive upset.

    About the Author

    Naomi Millburn has been a freelance writer since 2011. Her areas of writing expertise include arts and crafts, literature, linguistics, traveling, fashion and European and East Asian cultures. She holds a Bachelor of Arts in American literature from Aoyama Gakuin University in Tokyo.

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