The Carpet and Claws

In season two, episode one (2.001, May the Giant Be With You), Maddy Ferguson has a vision in the Palmer living room. The carpet near her chair rapidly becomes darkened by a stain or an effect called pooling, or sometimes watermarking, which happens when fibers are moved in an opposing direction. The reason I question if it is a stain is that claw marks seem to appear after the darkness has spread. 

Notice the marks intentionally raked across the carpet (Below). 

Though they may be unrelated, there are other instances of claw-like scratches or mentions of claws in Twin Peaks. 

In her secret diary, Laura shared a poem where she seemingly referenced BOB, referring to his "dirty claws." 

The poem in part, 

Before he began to turn me inside out
With his dirty claws
Before I sat on the tiny hill
We used to skip
Hold hands
Talk about what we saw

In episode one (1.001, Zen, or the Skill to Catch a Killer), Leo Johnson's truck rig depicts a large cat against a gray background whose tale appears to be scratching four wounds into the surface of his vehicle. Oddly, in the script for episode eight (2.001, May the Giant Be With You), instead of seeing a vision on the carpet, Maddy tells Sarah about a dream she had of a large gray cat. 

In episode three (1.003, Rest in Pain), Albert shares images of the wounds to Laura's shoulders and back, which he said were either claw marks or bites of some kind. They were later said to be made by Waldo the myna bird. They bring to mind the wounds made by BOB as described in The Secret Diary of Laura Palmer. 

I would bleed and I couldn't tell anyone, so I would sit up all night in my bathroom, all alone, and wait for it to stop coming out. Sometimes he would cut me between my legs, and other times he would cut me inside my mouth. Always tiny little cuts, hundreds of tiny little cuts. 

Recall how Laura's cause of death was determined to be loss of blood from several wounds, none great enough to kill her. 

The cuts on Laura's body. 

Another example occurs in episodes 12 and 13 (The Orchid's Curse, 2.005, Demons, 2.006). The wounds made to Harold's face are in three lines. 

In the script for episode 12, as Harold collects the hand cultivator, the description is as follows, 

 48. INT. GREENHOUSE - NIGHT START CLOSE on Harold's hand grabbing a gardening tool. Three metal prongs, sharp claws to tear and rend. 

Though I can't say how, the instances listed in this post somehow feel connected.