Brittany Lester, 21, also threatened to 'squeeze' the baby 'until he's gasping for air' and feed him urine in his baby bottle, according to the text messages she sent.
Her motivation was to hurt her ex-boyfriend after she found messages from another woman in his phone, authorities in Florida said.
The baby was not injured but the mother's threats made them worry about his safety and wellbeing.
The 13 photographs were taken in a St Petersburg hotel room where Lester, who was working as a topless waitress, was staying with the infant and her other child, a two-year-old, in August 2011.
Among the other pictures she sent to the 22-year-old father was one of her holding a plastic bag over the child's head.
In another, Lester appeared to be dunking the child in the toilet. Each text was accompanied by a promise to torture the man's son.
"I ain't want ya baby from start," she wrote to the father in a text message.
The father called police, who arrested Lester in her hotel room. Lester has now been jailed for one year.
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