Isha

Isha is a feral non-experimental dog that roams the Underground. She can be encountered anywhere, except Iceland and Hotland.

Isha used to be an alpha female in her pack, but she became older, causing her to become older. Another alpha female stole her place. The pack began to unallow her to eat with them, due to her weakness. Eventually she got attacked by them and had to leave. She is now alone, travelling the Underground by herself. However she is still injured by the attack.

Encounter
Upon encountering her, she won't be hostile. She will be found sitting on the ground, bleeding and injured. Frisk can decide to:
 * 1) Heal her with a health kit. REWARD: +50 EXP and looting companion.
 * 2) Kill her to end her misery. REWARD: +50 EXP and 10 LOVE points.
 * 3) Let her bleed to death. NO REWARDS.

Healing Isha
Only one health kit can be used to heal her. After healing Isha, she would be happy and playfully lick Frisk on the hands. 50 EXP is awarded and she will permanently become Frisk's secret looting companion.

Killing Isha
Killing Isha will award Frisk 50 EXP and 10 LOVE points.

Leaving her to die
Nothing will happen. She won't permanently disappear until Frisk leaves the area where she encountered her and comes back 3 days in game later. It is unknown if she got eaten by a predator instead of bleeding out. No EXP and no LOVE will be earned. Loot dropped upon death:
 * Dog meat (x2)
 * Dog fur (x2)
 * Bones (x10)

Secret Companion
She will occasionally appear in the Underground, holding rare items with her teeth and give them to Frisk. This is a good advantage, because she increases the chance of receiving rare items.

However, she cannot help Frisk fighting. Instead she would run away, due to her old age.