How can I tell the age of my orphaned kitten I'm hand-feeding?

Kittens should be gaining about 10 grams on average per day, and it seems like the kitten you're feeding is gaining steadily each day which is good, along with the healthy passing of stool. I would continue as you are doing, making sure the kitten appears full enough with each feeding and that weight gain continues daily. As the kitten gets older, this guide can help with formula feeding amounts, weaning to a solid food, problems to watch out for, and more to help Kitty grow up healthy: https://www.petcoach.co/article/how-to-raise-orphan-kittens/

He is not so far away from his normal weight,, actually. Count 100g/per week. So if he is a week old and weighs 90 g, that would still be ok, especially since he may not have been fed for a day before you found him. Keep feeding him kitten milk (pet-lac), as much as he wants, and keep him warm. Do not forget to stimulate his genitals and anus after feeding so he urinates and defecates and keep him clean (use a moist warm paper towel or tissue to rub gently, like a mother cat's tongue). If he is healthy, ie does not have any congenital conditions, he should grow normally. If you have any other cats in the household, it might be a good idea to let them interact with him, you might actually find a mama that way who may not have milk, but takes on the hygiene and babysitting and eventually teaching him to be a cat! It is very rewarding to raise a kitten! Enjoy!

At 4-5 weeks, kittens should be transitioning to solid foods, so it would be best to mix in the KMR with the wet food into a sort of slurry to help with the transition and make it easier to digest. You can also weigh Cleo with a food scale or other small scale to get her weight in ounces which can help you determine how big she is. Most kittens at this age will still needed to be fed several times a day. This article also has a great guide and charts about feeding and life stages from birth to about 8 weeks of age which may be helpful! https://www.petcoach.co/article/how-to-raise-orphan-kittens/

Three weeks old is too young for a kitten to be separated from it's mother, so I would return him to his mother if possible. If he is an orphan, he should be fed every three hours. Check out this website for further details on raising an orphan kitten: http://www.2ndchance.info/orphankitten.htm

So cute! You can age young kittens by weight. They should weigh about a pound per month when young. The best food is KMR (kitten milk replacer). I have also attached an extensive link that may help you with the kitten process. I hope this helps and thank you for using PetCoach! https://www.google.com/amp/s/mobile.petcoach.co/amp/article/how-to-raise-orphan-kittens

She's cute. She looks to be around 4-5 months of age, but you should weigh her. Her weight in months +1 is usually how we guess kittens ages. You should look at this photo to determine if this kitten is male or female. At this age it should be noticeable testicles and a penis protruding right below it if kitty is a male. https://www.vetmed.wsu.edu/outreach/Pet-Health-Topics/categories/procedures/cats/determining-gender-(sex)-of-a-kitten Best wishes with your new kitty! Take care.

He is still very young and misses his mommy and his siblings. You should feed him canned kitten food, as kibble is still too hard and a kitten cannot eat enough of it. Feed him small portions 4-5 times a day and feed as much as he wants to eat, ie refill the bowl a little bit at a time. Make sure water is available but not next to the food. It needs to be about 6 feet away from the food bowl. At this age (71 days) he should weigh a little over 1kg, or 2.3lbs