Literal translation: "beast-knob teapot" (兽扭壶) — a teapot whose lid is topped by a modeled animal (兽) finial or knop (扭).

Brief history: Lid finials shaped as animals are a long-standing decorative and functional feature in Chinese ceramics and teapots. Such motifs appear from Song and Yuan wares and became especially popular in the Ming and Qing dynasties. The form is widely seen in Jiangsu and Zhejiang workshop traditions and is well known in Yixing zisha teapots, where skilled artisans carved small beasts or mythic animals as practical grips and auspicious emblems. Animal finials often signal protection, good fortune, or references to literary and pictorial themes popular among scholars and collectors.

Note about the shape: Without an attached photo, the exact silhouette of this 兽扭壶 is ambiguous. Typically these teapots are small to medium-sized, with a rounded, flattened, or slightly squarish body, a short spout and a loop or C-shaped handle; the distinguishing feature is the sculpted animal atop the lid (lion, dragon, tortoise, qilin, or stylized foo dog are common). The finial both secures the lid and serves as a focal decorative element. If you upload a photo, I can give a more specific description.
Wood-fired handmade Yixing teapot made from Duanni clay sourced from the original Huanglongshan mine. Xu Shun Wei.