60 babies
No unless interaction from a male rat (such as getting a rat that is about to have babies). two female rats can not have babies
The average lifespan of a rat is two to three years. Just as other animals rats begin as babies, reach pubescent age, and adulthood.
No, mice and rats are two different species. Rats have rat babies, mice have mouse babies.
One every two years and rarely twins.
One every two years and rarely twins.
Each rat can get pregnant as early as 5 weeks, gestation period is only 21 days and they can have litters of up to 20. So if a rat had a litter every month for two years, it could have up to 480 babies in just one year and in just 5 weeks those babies could start having babies... It's definitely possible.
I don't know about for Rattus Rattus (roof rat or black rat), but Rattus Norvegicus (the brown rat) can have up to twenty-two, but twelve is a more likely number. Same applies to pet rats, as they are also Rattus Norvegicus, just domesticated.
They have one infant at a time, every two or three years.
Although both rodents, it is impossible for these two very different animals to reproduce together.
Well, a female rat can have 8 litters a year, so 16 in two years. And an average litter can have up to 20 baby's (Even more) Sooooo.....About 320. Thats if my maths it correct D:
A rat-kangaroo has two large hind legs, and two much smaller forepaws.
Pandas will have one or two cubs every 2-3 years.