If you are referring to 'gestation' most rhinos take between 17-19 months depending on type. -( 'incubation' generally refers to animals with eggs )
10wks
The word "incubation" directly refers to the time an egg needs to be kept warm before it hatches. Since cows do not lay eggs, they do not have an incubation period. They have what is called a "gestation" period. This gestation period is generally 285 days long.
98 monthes
1-4 Days
A bengal tiger cub stays with their mother for about 1 year or less. They don't have an incubation period.
6 months
4 - 8 weeks
it's about 24 days
On average five months.
10 years to 85
It takes about 11 months.
10-20 years