**Verdict: PASS**

All six are distinct in silhouette and colour. In the phone-scale strip each is identifiable by its colour and one standout feature.

**Species identity (front contact):**
- The raccoon's mask and ringed tail read clearly.
- The tuxedo cat's black body, white chest and paws, and upright white-tipped tail read clearly.
- The squirrel's huge tail is obvious.
- The pigeon is acceptable.
- The corgi, duckling and raccoon all read.

**Phone rear view:**
- Squirrel: the big red tail is the strongest read.
- Raccoon: the ringed tail reads.
- Cat: the black body plus white tail tip reads.
- Duckling: a yellow blob that is clearly a duckling.

**Remaining findings, all optional:**
1. **Pigeon, rear:** the teal collar is the only cue, and the head/body split is faint. Darker wing bars or a more visible tail would help. This is the weakest of the six.
2. **Corgi, rear:** it is a generic orange blob, and only the white rump patch keeps it from looking like a fox or hamster. A slightly bigger white rump or a stubby tail would help.
3. **Cat, rear:** the tail is thin at phone size, and the white tip is only a few pixels. A slightly thicker tail or bigger tip would help.

None of these is essential. The squirrel tail requirement is met.