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The scene is developing in the 13200 block of Aqueduct Road at Eisenhower Park in northeast Harris County, Sheriff Ed Gonzalez said.
Gonzalez said the mother and child sustained bite wounds, but the extent of their injuries was not immediately provided.
Over the past few weeks, the city and county have seen a number of cases involving people being attacked by dogs.
In southwest Houston, residents in Maple West said a pack of dogs is terrorizing them, and they haven't been able to get the city to stop them.
In late March, a Spring mother was attacked by her neighbor's dog, after she got out of her car. The attack was so vicious, it ruptured her artery. The dog has since been euthanized.
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