Jenelle Evans lost a pet dog to Nathan Griffith. The said news was reported by Radar Online, which makes it seem like the former "Teen Mom" couple's feud is escalating.

The 23-year-old MTV personality was blasted last year after "Teen Mom" episodes showed her mistreating the pet dog of her then boyfriend, who was in jail at that time.

Now that Jenelle Evans and Nathan Griffith have broken up, the latter has reportedly gotten back his pet Huskie Wolf named Mugen.

"That was Nathan's dog before he even met Jenelle," an insider told Radar.

"He brought Mugen back from Ohio but the saddest thing was the dog seemed to get really scared when they got near Myrtle Beach. It was like he remembered being there and hated it."

Even though Jenelle Evans has apologized after viewers called her out for abusing Mugen, the insider claimed that the canine still seems to be traumatized.

"In the car [near Evans' old home], Mugen hid his face in the seat and wouldn't even look up," the insider shared.

"It was weird. He was acting really funny."

"Jenelle hasn't seen the dog since he's been back at all," the insider added.

Aside from issues with the dog that they shared, Jenelle Evans and Nathan Griffith are currently embroiled in a custody battle over their son, Kaiser.

According to a report from In Touch, Nathan Griffith is bent on getting custody of his 16-month-old baby. He is said to be motivated to keep Kaiser to himself because of his ex-girlfriend's new beau, David Eason.

The TV starlet's new boyfriend allegedly has history with domestic violence, making Nathan Griffith fear for his son's safety.

"Nathan is absolutely worried about Jenelle dating David and him being so close to [their son] Kai[ser]," a source claimed.

"He is looking into what he can do about custody. Things are in the works."

"Nathan wants Kai to grow up safely and this guy doesn't seem like a good guy," the source added.