I’ve heard of the distinction in other contexts but to give more details about the legal aspect, here are some of the relevant sections. Pardon the length but the CCC is wordy:
Causing unnecessary suffering
445.1 (1) Every one commits an offence who
(a) wilfully causes or, being the owner, wilfully permits to be caused unnecessary pain, suffering or injury to an animal or a bird;
(b) in any manner encourages, aids or assists at the fighting or baiting of animals or birds;
© wilfully, without reasonable excuse, administers a poisonous or an injurious drug or substance to a domestic animal or bird or an animal or a bird wild by nature that is kept in captivity or, being the owner of such an animal or a bird, wilfully permits a poisonous or an injurious drug or substance to be administered to it;
(d) promotes, arranges, conducts, assists in, receives money for or takes part in any meeting, competition, exhibition, pastime, practice, display or event at or in the course of which captive birds are liberated by hand, trap, contrivance or any other means for the purpose of being shot when they are liberated; or
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Marginal note:Failure to exercise reasonable care as evidence
(3) For the purposes of proceedings under paragraph (1)(a), evidence that a person failed to exercise reasonable care or supervision of an animal or a bird thereby causing it pain, suffering or injury is, in the absence of any evidence to the contrary, proof that the pain, suffering or injury was caused or was permitted to be caused wilfully, as the case may be.
Marginal note:Presence at baiting as evidence
(4) For the purpose of proceedings under paragraph (1)(b), evidence that an accused was present at the fighting or baiting of animals or birds is, in the absence of any evidence to the contrary, proof that he or she encouraged, aided or assisted at the fighting or baiting.
Causing damage or injury
- (1) Every one commits an offence who
(a) by wilful neglect causes damage or injury to animals or birds while they are being driven or conveyed; or
(b) being the owner or the person having the custody or control of a domestic animal or a bird or an animal or a bird wild by nature that is in captivity, abandons it in distress or wilfully neglects or fails to provide suitable and adequate food, water, shelter and care for it.
[…]
Marginal note:Failure to exercise reasonable care as evidence
(3) For the purposes of proceedings under paragraph (1)(a), evidence that a person failed to exercise reasonable care or supervision of an animal or a bird thereby causing it damage or injury is, in the absence of any evidence to the contrary, proof that the damage or injury was caused by wilful neglect.
Order of prohibition or restitution
447.1 (1) The court may, in addition to any other sentence that it may impose under subsection 444(2), 445(2), 445.1(2), 446(2) or 447(2),
(a) make an order prohibiting the accused from owning, having the custody or control of or residing in the same premises as an animal or a bird during any period that the court considers appropriate but, in the case of a second or subsequent offence, for a minimum of five years; and
(b) on application of the Attorney General or on its own motion, order that the accused pay to a person or an organization that has taken care of an animal or a bird as a result of the commission of the offence the reasonable costs that the person or organization incurred in respect of the animal or bird, if the costs are readily ascertainable.
Uttering threats
264.1 (1) Every one commits an offence who, in any manner, knowingly utters, conveys or causes any person to receive a threat
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© to kill, poison or injure an animal or bird that is the property of any person.