Roedd awel oer yn chwythu drwy strydoedd Abertawe, a Gwen yn cerdded yn llawen gyda'i gafr anwes, Megan, ar dennyn ochr y ffordd.

The cold wind was blowing through the streets of Swansea, and Gwen was walking happily with her loyal dog, Megan, on the pavement.

Roedd Gwen yn mwynhau mynd â Megan i'r parc bob dydd, ond heddiw roedd hi wedi penderfynu gwneud rhywbeth wahanol.

Gwen enjoyed taking Megan to the park every day, but today, she had decided to do something different.

Roedd angen bwyd arni ac felly penderfynodd fynd â Megan i'r archfarchnad leol, heb feddwl am y canlyniadau.

She needed food, so she decided to take Megan to the local supermarket without thinking about the consequences.

Cyrhaeddodd Gwen yr archfarchnad a rhoddodd Megan yn y cerbyd siopa fel bod hi'n ddiogel.

Gwen arrived at the supermarket and tied Megan to the shopping cart to keep her safe.

Ond, wrth iddi droi ei chefn i edrych ar rai afalau ffres, llithrodd Megan o'r cerbyd siopa a dianc rhwng y silffoedd.

However, as she turned her back to look at some fresh apples, Megan slipped out of the shopping cart and darted between the aisles.

Pan drodd Gwen yn ôl, roedd Megan wedi diflannu.

When Gwen turned back, Megan had vanished.

Dechreuodd alw'r gafr gan grwydro'r siop yn bryderus.

She started calling for her dog while anxiously wandering the store.

Sylwodd Dafydd a Rhys, dau o'i ffrind gorau oedd yn siopa hefyd, ar ei phryder.

Dafydd and Rhys, two of her best friends who were also shopping, noticed her distress.

Dewisodd Dafydd a Rhys helpu Gwen i chwilio am Megan.

They decided to help Gwen search for Megan.

Dechreuodd y ddau ddyn grwydro pob cornel o'r archfarchnad.

The two men began to wander every corner of the supermarket.

O'r cwpwrdd bara i'r adran llysiau, roedd Megan yn anghyfleus i'w phrynu.

From the bread aisle to the vegetable section, Megan was proving difficult to locate.

Roedd hi'n gwthio potiau picls i'r llawr a chwalu cnau yn yr adran greision.

She was knocking over pickle jars and crushing nuts in the fruit section.

Roedd y siop yn llawn sŵn a chyffro wrth i Megan wneud ei ffordd trwy'r siop.

The store was filled with noise and excitement as Megan made her way through the shop.

Yn y cyfamser, Gwen oedd yn llawn gofid a phryder am ei gafr.

Meanwhile, Gwen was full of worry and concern for her dog.

Cerddodd hi i bob man yn galw enw Megan a gobeithio am y gorau.

She walked around calling Megan's name and hoping for the best.

Ond, wrth i oriau fynd a dod, roedd hi bron â rhoi'r gorau iddi.

But as hours passed, she was close to giving up.

Ond yna, clywodd lais cyfarwydd - cofleidiodd Megan a'i tho bach gwalltog yn cael ei ddal gan Dafydd a Rhys, union cyn iddi gael ei dal gan y diogelwch.

Then, she heard a familiar sound – Megan's little mischievous bark being caught by Dafydd and Rhys just before she was caught by security.

Rhuthrodd Gwen at ei ffrindiau yn llawn rhyddhad.

Gwen rushed to her friends in relief.

Roedd pawb yn yr archfarchnad wedi bod yn dyst i'r anhrefn.

Everyone in the supermarket had been witness to the chaos.

Ond yn wahanol i'r hyn y byddech chi'n ei ddisgwyl, nid oedd neb yn ddig.

But contrary to what one might expect, no one was angry.

Yn hytrach, canfu pawb stori Megan yn ddiddorol a thrwy rannu'r stori, daethon nhw i gyd yn agosach at ei gilydd.

Instead, everyone found Megan's story interesting and by sharing the story, they all came closer to each other.

Mewn diwedd, diolch i gyflymder a synnwyr digrifwch Dafydd a Rhys, dychwelodd Megan i Gwen heb niwed.

In the end, thanks to the quick thinking and sense of humor of Dafydd and Rhys, Megan returned to Gwen unharmed.

Wedi dysgu gwers bwysig am fynd â gafr i'r archfarchnad, penderfynodd Gwen cadw ei hymwelion â'r parc yn unig o hyn ymlaen.

Having learned an important lesson about taking a dog to the supermarket, Gwen decided to keep her visits to the park from now on.

Gwelodd pawb ym mhobman y stori fel chwedl am undod, a sut gall digwyddiad annisgwyl ddod â phobl ynghyd mewn cyfeillgarwch a chwerthin.

Everyone saw the story as a tale of unity, and how an unexpected event can bring people together in camaraderie and laughter.