Ermine redirects here. For other uses, see Ermine (disambiguation). The stoat (Mustela erminea), also known as the short-tailed weasel, is a mammal of the genus Mustela of the family Mustelidae native to Eurasia and North America, distinguished from the least weasel by its larger size and longer tail with a prominent black tip.
Although there is a wide range of ages at which babies stop burping, if your daughter is now 4 months old, and does fine without burping, then you likely can simply stop trying to burp her. It may be that she is just not swallowing much air as she eats anymore.
Tummy Time Duration. Unfortunately, many parents say that their babies hate tummy time, which should usually last 10 to 20 minutes once, or twice a day, and just cry when they put them down on their tummies. Studies suggest that you can start slow and try to work up to 20 minutes twice a day by the time your baby is 3 to 4 months old.