Firefighters were called to rescue a woman from mudflats near The Ferry pub in Egremont, Wirral, around 1.30pm today.
A 34-year-old woman became stranded about 10 metres from the shore after she waded out to retrieve her dog, who had run out on to the mudflats.
She called Merseyside Fire & Rescue Service who sent out rescue teams from Wallasey and Birkenhead.
After spending 40 minutes using mud rescue techniques they helped her to safety.
The woman was checked by paramedics at the scene but found to be suffering no injuries.
Her Dog was also unharmed.
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Station Manager Barry Moore, speaking on behalf of crews from Wallasey and Birkenhead Community Fire Stations, said: “The woman waded out on to the mud after her dog and became stuck up to her lower legs.
“She was very calm and firefighters used salvage sheets to reach her before physically helping her to safety.
“We helped her get clean and warm and she was given a precautionary check by paramedics. Thankfully she was found to be unharmed and suffering no ill effects.
“Her dog was able to safely make its own way back to shore.
“The river is an extremely dangerous environment, even on low tide, and we would encourage the public to avoid the area whenever possible.
“Conditions change rapidly, both underfoot and with the varied water levels, so people can find themselves in a hazardous position with little warning.”