"I do feel remorse and regret for my actions, and I would like to ask that people stop sending death threats to me and my partner," he reportedly wrote in a Facebook post.
The animal had bitten it off after it got stuck in a frozen watering hole.
The new law goes into effect March 1st.
The temperature in the barn where the animals were found reached -11 degrees Farenheit.
The one-week-old puppies were found by passing kayakers; the runt of the litter had swallowed some water and mud.
An online petition calling on the museum to remove three works has gained nearly half a million signatures in four days.
In the video, panda keepers are seen repeatedly pushing, dragging and throwing the pandas away from the door of their enclosure.
Three lions, two tigers, two Asian black bears, and two hyenas have been rescued from the Magic World amusement park near Aleppo.
Both director Lasse Hallstrom and actor Josh Gad voiced their concern about the alleged incident.
Matthew Maloney, 25, said that he did not believe actions were "that bad."
Sterile, mute and crammed into tiny cages, the ducks are force-fed twice a day for two weeks before the trip to the abattoir