Some of the most subtle signs of a cub artist:
1. Neoteny (enlarged head, implying a smaller body or more childlike proportions). Some artists do this unintentionally, which should show either latent pa3d0philia or hint that they are hiding something.
2. Preference of "ass over tits". They obsess over bodily features that are present on undeveloped persons. They may prefer flat chested characters or simply have less interest in breasts. Big red flag.
3. Enjoyment of small and petite characters. This one is self-explanatory.
4. Use of bright flat colors and other childish thematic elements. Clothing, environments, or accessories that are reminiscent of childlike themes.
5. Large round eyes with round pupils. This is a common trait among exclusively western cub artists as they draw inspiration from their own insular communities.
6. Thin limbs, excessive exposed midriff in images, bows, flowers, braces, or any such infantilizing accessories even on adult characters.
7. Characters exhibiting naivete or innocence, constant joy/smiling/winking.
8. Any of the following pararphilias: DD/lg, glasses, feet, petite characters, incest, "daddies", fairies, or imps.
9. Excessive outspoken enjoyment of children's animated franchises, up to and including taking visual inspiration from them.
Note that the presence of these does not strictly indicate a pa3d0 but serves as a problematic "red flag" that should tip off monitoring community procurers. Especially if a person exhibits more than one or two.