There are no snake species that I know of that are fully grown at 18 months. Some males may become sexually mature at that age, but they still have a few years or more of growth ahead of them and are not physically mature.
A rabbit will have grown out of his or her baby looks by 6 months, and can be spayed/neutered and vaccinated after around 3 months. However they are not fully adult until around 18 months.
Fully grown: around 18 pounds.
No you are not fully grown until the age of 25.
fully grown the male is 19-21 in. and the female is 18-20 in.
Baby bettas are slow growers so it may take about a few months but not that long! But I recommend chopping up his normal flakes or pellets because her/his mouth is about the size of a baby fingernail! Hope this helps
Usually when it is around 18 to 24 months old.
In general, a small breed dog (mixed breed or purebred) will have achieved its full bone growth at 12-18 months of age. However, the dog may still continue to add muscle mass until 24 to 36 months of age.
I was 18, and I took me about 6 months to get fully released from the doctor. L4l5
Most pugs reach their full height by 15 months of age. At 2 years they are finished growing, at least vertically. Many pugs do suffer from obesity so they may continue to widen and expand, owners must be careful to not overfeed them.
Well, For most larger dogs, it can take up to two years. Smaller dogs grow their bodies faster. Many dogs, even large breeds, will reach their full size by the age of 8-10 months, but their metabolism won't be that of a "fully grown" adult dog until 18 months to two years. As noted above, the process doesn't take as long for small dogs, who are often full size by four months with an adult metabolism by 12 months.
From a biological standpoint, the body becomes fully developed when the process of puberty ends. This varies among individuals, but tends to be from 15 to 17 for females, and 16 to 18 for males. Of course, the body will continue to mature after this time, but both primary and secondary sexual characteristics will have developed by the end of puberty.
between 12-24 months. All dogs mature at different rates.