curl --request PUT \
  --url https://{organization}.rescueconsole.com/api/events/events/{id}/animals \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "animal_ids": [
    "e4a1c9f0-7b2d-4c6e-9a3f-1d8b5e2c0a77",
    "0c3f7a9e-2d1b-4e5c-8f6a-b9d4e1c7a352"
  ]
}
'

const options = {
  method: 'PUT',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    animal_ids: ['e4a1c9f0-7b2d-4c6e-9a3f-1d8b5e2c0a77', '0c3f7a9e-2d1b-4e5c-8f6a-b9d4e1c7a352']
  })
};

fetch('https://{organization}.rescueconsole.com/api/events/events/{id}/animals', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://{organization}.rescueconsole.com/api/events/events/{id}/animals"

payload = { "animal_ids": ["e4a1c9f0-7b2d-4c6e-9a3f-1d8b5e2c0a77", "0c3f7a9e-2d1b-4e5c-8f6a-b9d4e1c7a352"] }
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.put(url, json=payload, headers=headers)

print(response.text)

{
  "animal_ids": [
    "<string>"
  ]
}

{
  "error": "house_trained must be 1, 0 or null (not assessed)"
}

{
  "error": "house_trained must be 1, 0 or null (not assessed)"
}

{
  "error": "house_trained must be 1, 0 or null (not assessed)"
}

{
  "error": "house_trained must be 1, 0 or null (not assessed)"
}