Yes... You can take an estimated guess. But it'd be hard to make an exact age.
ask it!
Kittens can start purring when they are around 2 days old. Purring often begins when they are nursing as a way to communicate contentment to their mother.
They will be bigger with more spots on the shell. Usually you can tell just by looking at it.
There's no telling. If you rub something your old cat lies on onto the kitten, the kitten might be accepted. Good luck!
The best way to tell what gender a cat is, is by looking underneath the base of its tail. A male kitten that has not been neutered will have two furry testicles right below the anus, and a penis right below the testicles. A neutered male cat or very young kitten will not have visible testicles, but there will be a noticeable space between its anus and penis. Spayed and intact female kittens alike will have a genital opening (vulva) which is often seen as a tear-drop shape located right below the anus. It is usually very difficult to accurately tell the sex of a kitten until it is at the very least two weeks old. In males, the testicles do not begin to develop until four to six weeks old.
by the smell
there are spacial kitten foods.
If the kitten ate it willingly, nothing bad should happen. A 4 week old kitten is just at the very earliest stages of weaning, so don't start feeding it solid food only at this point, he/she still needs to nurse regularly.
it is sooo old that its just old thank you from looking at this
Yes she can go through depression. To get over this, adopt a new friend for her and show her you love her
Introduce the kitten slowly in a separate room with its own essentials. Swap bedding between the two cats to help them get used to each other's scents before allowing any face-to-face interactions. Supervise their initial interactions to ensure they are comfortable with each other before allowing them to freely roam together.
well i cant tell you how old you pet is but you can buy going into my pets and hitting the pet you are looking for and it should tell you when you pet was adopted and then just count up your years!