OPINION BY
¶ 1 This appeal poses the question of whether the failure of a trained drug detection dog to alert to the presence of cocaine in a suspect’s luggage vitiates probable cause to conduct a physical search of that luggage when multiple tips and the suspect’s own conduct suggest that he is transporting illegal drugs. In view of the potential for error by either canine or handler, we conclude that a drug dog’s response, by itself, does not negate probable cause for a further search. Rather, the response of the dog or dogs used must be considered by an impartial magistrate *1285 as one element in the “totality of the circumstances” considered to determine probable cause.
¶ 2 In this case, police acting on tips from several sources, targeted defendant Aaron L. Brown for investigation. After subjecting his bag to two “canine sniffs,” they obtained a search warrant for his luggage which revealed a digital scale and 30.1 grams of cocaine and lead to Brown’s conviction of Possession with Intent to Deliver, see 35 P.S. § 780-113(a)(30). Brown now challenges his judgment of sentence on the basis that the first of the two sniff searches was inconclusive and, as such, vitiated probable cause for the issuance of a search warrant and rendered invalid the warrant actually issued. Brown argues accordingly that the trial court erred in refusing to suppress the evidence seized pursuant to the warrant. Following careful review of Brown’s assertions, we find no basis for the relief he seeks. Accordingly, we affirm the judgment of sentence.
¶ 3 Brown’s arrest followed a stake-out by Pennsylvania State Police (PSP) Trooper Anthony Bozich based on three tips he had received over a one-year period alleging Brown’s participation in the sale and distribution of cocaine in North East Borough, Erie County. The first tip, provided by an anonymous citizen, indicated only that Brown was engaged in the distribution of illegal drugs in North East. The second tip, provided by a Detective Don Dacus of the City of Erie Police Department, indicated that a confidential informant had told Erie Police that Brown transported cocaine from Detroit to Erie, traveling between the two cities by Greyhound bus on weekdays. The third tip was provided to PSP Trooper Steve Fara-baugh by another confidential informant who reported that he had assisted Brown in cocaine trafficking and that Brown planned to arrive in Erie on a Greyhound bus traveling from Detroit on the evening of June 22, 2004, carrying cocaine. Trooper Farabaugh then relayed this information to Trooper Bozich.
¶4 Based upon this third tip, Trooper Bozich obtained the passenger manifest of a certain bus arriving from Detroit. The manifest showed two male passengers, neither of whom reported the name Aaron Brown. When the bus arrived, however, Bozich noted that one of the passengers matched Brown’s appearance as depicted in a driver’s license picture obtained from the State of Michigan. The passenger carried only a black nylon duffel bag and disembarked with a companion. When approached by Trooper Bozich, he identified himself as “Keith Smart,” and responded to the trooper’s question indicating that he was on his way to North East to see his girlfriend. “Smart” denied carrying drugs in his bag or on his person and refused Bozich’s request to conduct a search. Accordingly, Bozich detained him pending the arrival of a drug-sniffing dog and his handler. When the dog arrived, its first encounter with the duffel bag proved inconclusive. When the bag was repositioned, however, with a group of bags known not to contain drugs, the dog “alerted” to the presence of contraband. Trooper Bozich then executed an affidavit of probable cause setting forth the foregoing facts with the exception of the failure of the dog to alert on its first encounter with the bag. Based upon the remaining information, the magistrate issued a warrant to search the duffel. The search revealed a digital scale and 30.1 grams of cocaine.
¶ 5 Prior to trial, Brown filed an omnibus pre-trial motion seeking suppression of the evidence seized from his duffel bag. Although Brown failed to appear, his counsel argued that the inconclusive canine sniff, which occurred before the sniff on which the police relied to obtain the search warrant, actually vitiated any probable *1286 cause that may have existed and rendered the warrant illegal. The trial court, the Honorable William R. Cunningham, concluded to the contrary and admitted the evidence of contraband at trial. Based on that evidence, the jury found Brown guilty as charged. At the subsequent sentencing hearing, Judge Cunningham sentenced Brown to three to six years’ incarceration to be followed by four years’ probation. Before concluding the sentencing proceeding, the court granted private counsel leave to withdraw and the Public Defender of Erie County assumed representation. Brown filed a motion for modification of sentence, which Judge Cunningham denied. Brown then filed this appeal, raising the following question for our review:
Whether the lower court erred in concluding that sufficient probable cause existed to justify the grant of a search warrant, following an “inconclusive” canine “sniff’ search?
Brief for Appellant at 3 (capitalization limited to improve readability).
¶ 6 Brown’s question challenges the trial court’s order denying his motion to suppress evidence seized under color of a warrant issued on the basis of a canine sniff.
Our standard of review of a denial of suppression is whether the record supports the trial court’s factual findings and whether the legal conclusions drawn therefrom are free from error. Our scope of review is limited; we may consider only the evidence of the prosecution and so much of the evidence for the defense as remains uncontradicted when read in the context of the record as a whole. Where the record supports the findings of the suppression court, we are bound by those facts and may reverse only if the court erred in reaching its legal conclusions based upon the facts.
Commonwealth v. Reppert,
¶ 7 We concur in the Commonwealth’s assessment of the merits of this issue. “[P]robable cause does not demand the certainty we associate with formal trials.”
Illinois v. Gates,
¶ 8 Adjudged by this standard, the evidence available to Trooper Bozich readily established probable cause for the first canine sniff search. Although the first tip suggested only that Brown was engaged in dealing illegal drugs in North East Borough, the second tip, provided by a source known to the Erie police department, established that Brown carried on his activity between Detroit and Erie, traveling between the two cities on weekdays by Greyhound bus. The third tip, much like the tip discussed in
Gates, see
¶ 9 Brown argues in addition, however, that notwithstanding the existence of probable cause for the initial sniff search, the failure of the dog to “alert” upon his first exposure to the duffel bag effectively vitiated probable cause and rendered the warrant issued for the physical search of the bag illegal. Brief for Appellant at 12. Brown reasons that in the absence of the information concerning the first “inconclusive” sniff search, “the magistrate who issued the warrant could not make a ‘practical, common sense decision’ whether to grant or deny the search warrant given that he was not presented with this highly significant and relevant information.” Brief for Appellant at 12. Brown fails, however, to cite a single case in support of the conclusion that an inconclusive canine sniff vitiates pre-existing probable cause. The Commonwealth addresses the issue more thoroughly, conceding that Pennsylvania courts have not resolved it. The Commonwealth recognizes, however, that appellate courts in other jurisdictions have considered canine sniff searches specifically as they relate to probable cause.
¶ 10 An overview of these decisions reveals “a near universal recognition that a drug-sniffing dog’s failure to alert does not necessarily destroy probable cause[.]”
United States v. Davis,
The infallible [drug-sniffing] dog ... is a creature of legal fiction. [Indeed] their supposed infallibility is belied by judicial opinions describing well-trained animals sniffing and alerting with less than perfect accuracy, whether owing to errors by their handlers, the limitations of the dogs themselves, or even the pervasive contamination of currency by cocaine.
Caballes,
¶ 11 A similar recognition prompted Judge (now Justice) Stephen Breyer to conclude that a “dog’s failure to react does not ... destroy the ‘probable cause’ that would otherwise exist. It is just another element to be considered!)]”
United States v. Jodoin,
¶ 12 We recognize that, unlike in this case, the investigating officer in Jodoin included the dog’s failure to alert in the affidavit of probable cause, allowing the magistrate to consider it as part of the “totality of circumstances.” See id. at 235-36. Nevertheless, we do not deem the omission of that information from the affidavit here to be dispositive. Although we do not condone the omission of relevant information from an affidavit of probable cause, the fact remains that notwithstanding the failure of the dog to alert on its first encounter with the bag, the remaining circumstances that supported a probable cause determination had not changed. Consistent with the third tip that Trooper Bozich received, Brown arrived in Erie from Detroit on an appointed day and time by Greyhound bus. In addition, he traveled under an assumed name and refused to identify himself truthfully even when questioned by the officers. Moreover, the officer who handled the drug detection dog explained that the animal’s failure to alert on the first encounter had likely resulted from the fact that the bags with which Brown’s duffel had been placed for the first sniff search had been stored with the dog’s training gear, ostensibly prompting those bags to smell of narcotics. N.T., Suppression Hearing, 12/10/04, at 15.
¶ 13 Thus, even had the magistrate had the benefit of information concerning the first “inconclusive” search, the other facts available to him remained legally ample to establish probable cause. Numerous jurisdictions, both federal and state, have
*1289
reached similar conclusions, mindful of both the dogs’ vulnerability to confusion and that failure to alert to the alleged presence of narcotics is but one factor in adjudging the totality of the circumstances underlying probable cause.
See, e.g., United States v. Stephens,
¶ 14 We find the weight of this authority compelling. We hold accordingly that the failure of a trained dog to respond to the alleged presence of narcotics is but one factor to be considered in adjudging whether the totality of the circumstances establishes probable cause. Given the recognized fallibility of the dogs’ sense of smell and its vulnerability to confusion by other ambient odors, a dog’s failure to alert will not defeat probable cause where other factors, viewed within the totality of the circumstances, continue to support it. The trial court treated the failure of the *1290 dog to alert on its first encounter with Brown’s bag in precisely this manner, recognizing that the totality of the circumstances continued to support probable cause. Consequently, we find no error in its decision not to suppress the evidence seized following the physical search of Brown’s duffel bag.
¶ 15 For the foregoing reasons, we affirm the judgment of sentence.
¶ 16 Judgment of sentence AFFIRMED.
