Furry families celebrate mothers in this week’s Animal Tracks

Polar bear cubs with their moms and more in this week's Animal Tracks

Gray langur mother Sally holds her baby in its enclosure in Berlin's Zoo in Berlin on Feb., 21. 2014.

Johannes Eisele / AFP

The nine-day-old giraffe Bine licks another giraffe named Andrea in Friedrichsfelde zoo in Berlin on May 9, 2014.

Stephanie Pilick / DPA

Allie, a 26-year-old bottlenose dolphin, swims with her newborn calf at the Brookfield Zoo in Brookfield, Ill., on Aug. 4, 2013.

Jim Schulz / Chicago Zoological Society

Orangutan Niu-fang clings to her mother Xiang-niu at the Taipei Zoo in Taipei, Taiwan, on March 1, 2014. Niu-fang and her parents are Bornean oragangutans, an endangered species native to Malaysia and Indoneisia.

Taipei Zoo / Handout / TAIPEI ZOO

White lion Azira looks at her one-week old cub in their enclosure in Zoo Safari in Borysewo, Poland, on Jan. 30, 2014.

Grzegorz Michalowski / PAP

A sea lion and her newborn are seen at the animal exhibition park Marineland in Antibes, France, June 28, 2013.

Lionel Cironneau / AP

An albino baby kangaroo peers out of the pouch of its mother at the zoo in Duisburg, Germany, on May 31, 2013.

Roland Weihrauch / DPA

A wolf plays with a one-month-old puppy in its enclosure of Berlin's Zoo in Berlin on May 31, 2013.

Johannes Eisele / AFP

A ring-tailed lemur with its seven-week-old cubs clinging to its back sits on a rock at the Schoenbrunn zoo in Vienna, Austria, on May 10, 2013.

Heinz-peter Bader / X00316

Giant panda Yuan Yuan holds her baby panda at the Taipei City Zoo in Taipei, Taiwan.

Taipei City Zoo / AFP

A polled hereford cow stands with her calf while feeding in a field on a farm near Carlisle, Iowa, on May 7, 2013.

Charlie Neibergall / AP

An onager foal eats alongside its mother in their enclosure at the zoo Tierpark Hagenbeck in Hamburg, Germany on June 27, 2013.

Axel Heimken / DPA

Cygnets swim next to their mother in Stockholm on June 26, 2013.

Jonathan Nackstrand / AFP

A baby Asian macaque monkey with its mother in their enclosure at the Beijing zoo on June 24, 2013.

Mark Ralston / AFP

Twin polar bear cubs stand with their mother Giovanna in their enclosure at Tierpark Hellabrunn in Munich on March 19, 2014.

Michael Dalder / X90041

Spring lambs belonging to Somerset farmer Ian Berry sleep beside their mother in their enclosure in a building at the Bath and West Showground near Shepton Mallet on March 3, 2014 in Somerset, England.

Matt Cardy / Getty Images Europe