Lambs lettuce is also called corn salad, common cornsalad, mâche, fetticus, feldsalat, nut lettuce, field salad, and rapunzel.
In restaurants that feature French cooking, it may be called doucette or raiponce, as an alternative to mâche, by which it is best known.
It grows in a low rosette with spatulate leaves up to 15.2 cm long.
It is a hardy plant that grows to zone 5, and in mild climates it is grown as a winter green. In warm conditions it tends to bolt to seed. (source)
So can hamsters eat lambs lettuce?
No they can’t as it may give them diarrhea due to the amount of water it contains.