**Verdict: REVISE**

**Evidence limits:**
- `city-look.png` is a Gulp City promo image with no critters in it. City contrast can't be judged from it. The only contrast evidence is the grey-blue ground in the other two sheets.
- The phone sheet shows one angle, and each animal is only about 50-60px tall.

**Good:** the front sheet is cute, chunky, smooth vinyl with no fur or textures. The six animals have clearly different front silhouettes, and the scale looks consistent.

**Findings:**

1. **Raccoon, pigeon and corgi are weak against the ground.** Evidence: in `phone-scale.png` the raccoon (grey-blue), the pigeon (blue-grey) and the grey-ish corgi shadow all sit close to the grey-blue street.
   - Fix: raise each one's luminance or hue contrast against the ground, with ΔL ≥ 25 (CIELAB) between body and street on the phone sheet.
   - Or add a darker or lighter outline or accent.

2. **The tuxedo-cat and raccoon are hard to tell apart from behind.** Evidence: in the phone sheet the cat is a dark blob with only a faint white patch. The raccoon is a round grey blob, and its ringed tail is the only cue.
   - Fix: give the cat a rear cue that reads at 60px, such as a tall curved tail with a white tip, or a white tail tip plus ear shapes.
   - Acceptance: a blind test at 60px where 5 of 6 rear views are named correctly.

3. **Several rears are generic round lumps.** Evidence: the duckling, corgi and pigeon backs read as rounded blobs.
   - Duckling: the tail and wing tuft are barely visible.
   - Corgi: the white tail dot is tiny.
   - Fix: exaggerate one rear identifier each, such as a duck tail flick, a bigger corgi butt-fluff or the pigeon's wing bars. Each should cover at least 8% of the silhouette's bounding width at 60px.

4. **Small features are lost at phone size.** Evidence: the pigeon's purple neck ring, the ear pinks and the eye dots vanish at phone scale.
   - Fix: any identity cue meant to be seen from behind must be at least 4px at 60px height.

5. **The squirrel's tail and the raccoon's pose are uneven.** Evidence: the squirrel's tail is oversized and reads as the whole animal from behind, which puts it out of scale with the others. The raccoon's tail is raised sideways in the front sheet.
   - Fix: the silhouette area of any single animal should stay within ±35% of the pack median.
   - Fix: use a neutral tail pose on all six.