Most antifreeze solutions contain high levels of ethylene glycol, an ingredient that, once metabolized, is extremely toxic to dogs and cats. Pets are often attracted to the liquid because of its sweet taste. Even small amounts can be lethal to animals.
Wiktionary(0.00 / 0 votes)Rate this definition: arduous(Adjective) Needing or using up much energy; testing powers of endurance. The movement towards a peaceful settlement has been a long and arduous political struggle.
In the execution of this task, there is no man who would not find it an arduous effort either to behold with moderation, or to treat with seriousness, the devices, not less weak than wicked, which have been contrived to pervert the public opinion in relation to the subject.