R

rabbit

raceway

rat

ratites

raven

rearing environment

redirected behavior

Regan, Tom

reintroduction

relationship

religion and animals

religion, history, and the animal protection movement

religious slaughter

reproduction

reproductive suppression

reptile

rescue groups

rescue shelter

resting behavior

restraint

Reverence for Life

rhinoceros

rodent

Rollin, Bernhard

Romania: Country Analysis

Romanes, George J.

roosting

Royal Society for the Prevention of Cruelty to Animals (RSPCA)

Royal Society for the Prevention of Cruelty to Animals (RSPCA), History

Royal Society for the Prevention of Cruelty to Animals (RSPCA) Reform Group

The 3Rs, reduction, refinement, and replacement see Three Rs (3Rs) prinicple

running wheel

Russell and Burch

Ryder, Richard